The ultimate goal here is to merge the Storm and JStorm code bases and communities. The current proposal is to do a feature freeze on storm-core while this work happens, but everything under external should still be open for development.
I (Bobby) envision this merger happening in two phases major, but we may blur the lines between these two as development happens.
Phase 1. Migrate clojure code to java using JStorm code as a reference
STORM-1225 - Getting issue details... STATUS
| Namespace | Dependency | JIRA | Notes | JStorm Similar Code |
|---|---|---|---|---|
| backtype.storm.LocalCluster | backtype.storm.config backtype.storm.testing | STORM-1282 - Getting issue details... STATUS | https://github.com/apache/storm/blob/jstorm-import/jstorm-core/src/main/java/backtype/storm/LocalCluster.java | |
| backtype.storm.LocalDRPC | backtype.storm.config backtype.storm.daemon.drpc backtype.storm.util | STORM-1274 - Getting issue details... STATUS | https://github.com/apache/storm/blob/jstorm-import/jstorm-core/src/main/java/backtype/storm/LocalDRPC.java | |
| backtype.storm.MockAutoCred | backtype.storm.config backtype.storm.testing | STORM-1283 - Getting issue details... STATUS | Mock implementation of INimbusCredentialPlugin,IAutoCredentials and ICredentialsRenewer for testing only. | NONE |
| backtype.storm.clojure | backtype.storm.thrift backtype.storm.util | STORM-1259 - Getting issue details... STATUS | Clojure Storm API (Needs to be kept for backwards compatibility, possibly in separate maven package) | NONE |
| backtype.storm.clojure-test | backtype.storm.clojure backtype.storm.config backtype.storm.daemon.common backtype.storm.testing backtype.storm.thrift | STORM-1259 - Getting issue details... STATUS | Tests for Storm Clojure API | NONE |
| backtype.storm.cluster | backtype.storm.config backtype.storm.converter backtype.storm.daemon.common
backtype.storm.util backtype.storm.zookeeper | STORM-1273 - Getting issue details... STATUS | current state of the cluster (Some of this moves to java as a part of heartbeat server) | https://github.com/apache/storm/tree/jstorm-import/jstorm-core/src/main/java/com/alibaba/jstorm/cluster |
| backtype.storm.cluster-test | backtype.storm.cluster backtype.storm.config
backtype.storm.testing backtype.storm.thrift backtype.storm.util backtype.storm.zookeeper | STORM-1284 - Getting issue details... STATUS | Tests for backtype.storm.cluster | NONE? |
| backtype.storm.command.activate |
backtype.storm.thrift | STORM-1260 - Getting issue details... STATUS | Activate a topology | https://github.com/apache/storm/blob/jstorm-import/jstorm-core/src/main/java/backtype/storm/command/activate.java |
| backtype.storm.command.config-value | backtype.storm.config
| STORM-1242 - Getting issue details... STATUS | Read a config value | https://github.com/apache/storm/blob/jstorm-import/jstorm-core/src/main/java/backtype/storm/command/config_value.java |
| backtype.storm.command.deactivate |
backtype.storm.thrift | STORM-1261 - Getting issue details... STATUS | deactivate a topology | https://github.com/apache/storm/blob/jstorm-import/jstorm-core/src/main/java/backtype/storm/command/deactivate.java |
| backtype.storm.command.dev-zookeeper | backtype.storm.config backtype.storm.util backtype.storm.zookeeper | STORM-1262 - Getting issue details... STATUS | Launch a development zookeeper instance | NONE |
| backtype.storm.command.get-errors | backtype.storm.daemon.common backtype.storm.daemon.nimbus
backtype.storm.thrift backtype.storm.util | STORM-1285 - Getting issue details... STATUS | get recent errors from a topology | NONE |
| backtype.storm.command.healthcheck | backtype.storm.config
| STORM-1243 - Getting issue details... STATUS | Check to see if this node appears to be healthy or not. | NONE |
| backtype.storm.command.kill-topology | backtype.storm.config
backtype.storm.thrift | STORM-1263 - Getting issue details... STATUS | Kill a running topology | https://github.com/apache/storm/blob/jstorm-import/jstorm-core/src/main/java/backtype/storm/command/kill_topology.java |
| backtype.storm.command.kill-workers | backtype.storm.config backtype.storm.daemon.common backtype.storm.daemon.supervisor backtype.storm.util | STORM-1286 - Getting issue details... STATUS | Kill all running worker processes on a node. | NONE |
| backtype.storm.command.list |
backtype.storm.thrift | STORM-1264 - Getting issue details... STATUS | list running topologies | https://github.com/apache/storm/blob/jstorm-import/jstorm-core/src/main/java/backtype/storm/command/list.java (Implementation is quire different) |
| backtype.storm.command.monitor | backtype.storm.thrift | STORM-1265 - Getting issue details... STATUS | Monitor a running topology | https://github.com/apache/storm/blob/jstorm-import/jstorm-core/src/main/java/backtype/storm/command/metrics_monitor.java (similar concept but implementation is very different) |
backtype.storm.command.rebalance | backtype.storm.config
backtype.storm.thrift | STORM-1266 - Getting issue details... STATUS | rebalance a running topology | https://github.com/apache/storm/blob/jstorm-import/jstorm-core/src/main/java/backtype/storm/command/rebalance.java (many different features from what apache storm currently supports) |
| backtype.storm.command.set-log-level |
backtype.storm.thrift | STORM-1267 - Getting issue details... STATUS | set log levels for a running topology | NONE |
| backtype.storm.command.shell-submission | backtype.storm.config
backtype.storm.thrift backtype.storm.util backtype.storm.zookeeper | STORM-1318 - Getting issue details... STATUS | Run clojure code passed in on the command line. we need to decide if we still want to support this or not. And if not remove it. | NONE |
| backtype.storm.command.upload-credentials |
backtype.storm.util | STORM-1244 - Getting issue details... STATUS | Upload new credentials to a running topolgy | NONE |
| backtype.storm.config |
backtype.storm.util | STORM-1227 - Getting issue details... STATUS | Some utils like functions (Part that makes storm config values into clojure constants needs to stay here and cannot be ported) | some in https://github.com/apache/storm/blob/jstorm-import/jstorm-core/src/main/java/com/alibaba/jstorm/utils/JStormUtils.java |
| backtype.storm.converter | backtype.storm.daemon.common
backtype.storm.stats backtype.storm.util | NONE | Convert between thrift and clojure types. When porting we should just use the Thrift type whenever possible. | NONE |
| backtype.storm.daemon.acker | backtype.storm.config
backtype.storm.util | STORM-1245 - Getting issue details... STATUS | Track acks for a tuple tree | https://github.com/apache/storm/blob/jstorm-import/jstorm-core/src/main/java/com/alibaba/jstorm/task/acker/Acker.java |
| backtype.storm.daemon.builtin-metrics | backtype.storm.stats | STORM-1268 - Getting issue details... STATUS | Built-in metrics | Very Different |
| backtype.storm.daemon.common | backtype.storm.config backtype.storm.daemon.acker
backtype.storm.thrift backtype.storm.util | STORM-1269 - Getting issue details... STATUS | Common utils shared by the daemons (Some things should just use the Thrift object) | https://github.com/apache/storm/blob/jstorm-import/jstorm-core/src/main/java/com/alibaba/jstorm/cluster/Common.java |
| backtype.storm.daemon.drpc | backtype.storm.config backtype.storm.daemon.common
backtype.storm.ui.helpers backtype.storm.util | STORM-1270 - Getting issue details... STATUS | DRPC server with HTTP and thrift support | (But missing HTTP support) |
| backtype.storm.daemon.executor | backtype.storm.cluster backtype.storm.config backtype.storm.daemon.builtin-metrics backtype.storm.daemon.common backtype.storm.daemon.task backtype.storm.disruptor
backtype.storm.stats backtype.storm.thrift backtype.storm.timer backtype.storm.tuple backtype.storm.util | STORM-1277 - Getting issue details... STATUS | Thread that runs tasks.
Also includes grouping code. | https://github.com/apache/storm/tree/jstorm-import/jstorm-core/src/main/java/com/alibaba/jstorm/task
(But has a lot more with it too) |
| backtype.storm.daemon.logviewer | backtype.storm.config backtype.storm.daemon.common backtype.storm.daemon.supervisor
backtype.storm.timer backtype.storm.ui.helpers backtype.storm.util | STORM-1280 - Getting issue details... STATUS | Display and manage log files. | UI Supports this so there is probably a supervisor API for this. But not really the same. and |
| backtype.storm.daemon.nimbus | backtype.storm.cluster backtype.storm.config backtype.storm.converter backtype.storm.daemon.common backtype.storm.local-state
backtype.storm.scheduler.DefaultScheduler backtype.storm.stats backtype.storm.timer backtype.storm.tuple backtype.storm.util backtype.storm.zookeeper | STORM-1276 - Getting issue details... STATUS | Its nimbus | https://github.com/apache/storm/tree/jstorm-import/jstorm-core/src/main/java/com/alibaba/jstorm/daemon/nimbus |
| backtype.storm.daemon.supervisor | backtype.storm.cluster backtype.storm.command.healthcheck backtype.storm.config backtype.storm.daemon.common backtype.storm.daemon.worker backtype.storm.event backtype.storm.local-state
backtype.storm.process-simulator backtype.storm.timer backtype.storm.util | STORM-1279 - Getting issue details... STATUS | launch and monitor workers | https://github.com/apache/storm/tree/jstorm-import/jstorm-core/src/main/java/com/alibaba/jstorm/daemon/supervisor |
| backtype.storm.daemon.task | backtype.storm.config backtype.storm.daemon.builtin-metrics backtype.storm.daemon.common
backtype.storm.stats backtype.storm.thrift backtype.storm.util | STORM-1271 - Getting issue details... STATUS | helper functions for task data and sending tuples | (does not have both executors and tasks) |
| backtype.storm.daemon.worker | backtype.storm.cluster backtype.storm.config backtype.storm.daemon.common backtype.storm.daemon.executor backtype.storm.disruptor backtype.storm.local-state
backtype.storm.messaging.loader backtype.storm.timer backtype.storm.util | STORM-1278 - Getting issue details... STATUS | The worker process with multiple executors and tasks | https://github.com/apache/storm/tree/jstorm-import/jstorm-core/src/main/java/com/alibaba/jstorm/daemon/worker |
| backtype.storm.disruptor | backtype.storm.log backtype.storm.util | STORM-1272 - Getting issue details... STATUS | wrapper around the disruptor queue. Might need some abstract base classes if it makes since. | |
| backtype.storm.drpc-test |
backtype.storm.config backtype.storm.daemon.common backtype.storm.daemon.drpc backtype.storm.testing | STORM-1287 - Getting issue details... STATUS | Test DPRC | NONE |
| backtype.storm.event |
backtype.storm.util | NONE | Thread for processing events. Java has built in things to deal with this, do we need to create another one? | https://github.com/alibaba/jstorm/tree/master/jstorm-core/src/main/java/com/alibaba/jstorm/event |
| backtype.storm.fields-test | STORM-1228 - Getting issue details... STATUS | Test java backtype.storm.tuple.Fields class | NONE | |
| backtype.storm.grouping-test |
backtype.storm.config backtype.storm.daemon.common backtype.storm.daemon.executor
backtype.storm.testing backtype.storm.thrift | STORM-1288 - Getting issue details... STATUS | Test groupings | NONE |
| backtype.storm.integration-test |
backtype.storm.config backtype.storm.daemon.common backtype.storm.testing backtype.storm.thrift backtype.storm.util | STORM-1289 - Getting issue details... STATUS | Run some storm topologies |
Not exactly the same but close |
backtype.storm.local-state |
backtype.storm.util | STORM-1246 - Getting issue details... STATUS | Wrapper around LocalState, with some helper functions for converting between storm and thrift | but not totally |
| backtype.storm.local-state-test | backtype.storm.testing | STORM-1290 - Getting issue details... STATUS | test for LocalState class | |
| backtype.storm.log | NONE | Just use slf4j | ||
| backtype.storm.logviewer-test | backtype.storm.config backtype.storm.daemon.logviewer backtype.storm.daemon.supervisor backtype.storm.ui.helpers backtype.storm.util | STORM-1291 - Getting issue details... STATUS | test for LogViewer | NONE |
| backtype.storm.messaging-test | backtype.storm.config backtype.storm.daemon.common backtype.storm.testing backtype.storm.thrift | STORM-1292 - Getting issue details... STATUS | test for local messaging transport | NONE? |
| backtype.storm.messaging.loader | backtype.storm.messaging.local | STORM-1248 - Getting issue details... STATUS | Just a small bit of glue code for calling transfer-local-fn when messaging batch arrives | NONE |
| backtype.storm.messaging.local | STORM-1247 - Getting issue details... STATUS | just a wrapper into backtype.storm.messaging.local.Context | NONE | |
| backtype.storm.messaging.netty-integration-test | backtype.storm.config backtype.storm.testing backtype.storm.thrift backtype.storm.util | STORM-1293 - Getting issue details... STATUS | Integration tests for netty messaging layer | |
| backtype.storm.messaging.netty-unit-test | backtype.storm.config backtype.storm.daemon.worker
backtype.storm.testing backtype.storm.util | STORM-1294 - Getting issue details... STATUS | Unit tests for netty messaging layer | |
| backtype.storm.metric.testing | STORM-1229 - Getting issue details... STATUS | Creates a FakeMetriConsumer class, that records datapoints | NONE | |
| backtype.storm.metrics-test |
backtype.storm.config backtype.storm.daemon.common backtype.storm.metric.testing backtype.storm.testing backtype.storm.thrift | STORM-1295 - Getting issue details... STATUS | Test for the metrics system | NONE |
| backtype.storm.multilang-test | backtype.storm.config backtype.storm.daemon.common backtype.storm.testing backtype.storm.thrift | STORM-1296 - Getting issue details... STATUS | Runs a few topolgies using the multi-lang feature. These should be moved to be a part of the multi-lang jars, and fixed to actually test something. | NONE |
| backtype.storm.nimbus-test | backtype.storm.MockAutoCred backtype.storm.cluster backtype.storm.config backtype.storm.converter backtype.storm.daemon.common backtype.storm.daemon.nimbus
backtype.storm.stats backtype.storm.testing backtype.storm.thrift backtype.storm.timer backtype.storm.util backtype.storm.zookeeper | STORM-1297 - Getting issue details... STATUS | test that nimbus works | NONE? |
| backtype.storm.process-simulator |
backtype.storm.util | STORM-1230 - Getting issue details... STATUS | Simulate processes in local mode | ??? |
| backtype.storm.scheduler-test | backtype.storm.config backtype.storm.daemon.nimbus backtype.storm.scheduler.EvenScheduler backtype.storm.testing | STORM-1298 - Getting issue details... STATUS
| Test even scheduler | ??? |
| backtype.storm.scheduler.DefaultScheduler | backtype.storm.config backtype.storm.scheduler.EvenScheduler backtype.storm.util | STORM-1232 - Getting issue details... STATUS | test DefaultScheduler, is this different from even scheduler??? | but not totally |
| backtype.storm.scheduler.EvenScheduler | backtype.storm.config
backtype.storm.util | STORM-1231 - Getting issue details... STATUS | try to schedule processes evenly across the cluster. |
maybe |
| backtype.storm.scheduler.IsolationSchedulerzookeeper | backtype.storm.config
backtype.storm.scheduler.DefaultScheduler backtype.storm.util | STORM-1239 - Getting issue details... STATUS | Schedule Topologies in an isolated pool of machines, else schedule evenly. | yes,the scheduler is integrated into defaultScheduler. |
| backtype.storm.scheduler.multitenant-scheduler-test | backtype.storm.config backtype.storm.daemon.nimbus
backtype.storm.testing | STORM-1299 - Getting issue details... STATUS | Test Multi-tenant scheduler | NONE |
| backtype.storm.scheduler.resource-aware-scheduler-test | backtype.storm.config backtype.storm.daemon.nimbus backtype.storm.testing backtype.storm.thrift backtype.storm.util | STORM-1300 - Getting issue details... STATUS | Test RAS | NONE |
| backtype.storm.security.auth.AuthUtils-test | STORM-1233 - Getting issue details... STATUS | Test AuthUtils | NONE | |
| backtype.storm.security.auth.DefaultHttpCredentialsPlugin-test | STORM-1234 - Getting issue details... STATUS | Test DefaultHttpCredentailsPlugin | NONE | |
| backtype.storm.security.auth.ReqContext-test | STORM-1235 - Getting issue details... STATUS | Test RequestContext | NONE | |
| backtype.storm.security.auth.SaslTransportPlugin-test | STORM-1236 - Getting issue details... STATUS | Test SaslTransportPlugin | NONE | |
| backtype.storm.security.auth.ThriftClient-test | backtype.storm.config backtype.storm.util | STORM-1237 - Getting issue details... STATUS | Test secure ThriftClient | NONE |
| backtype.storm.security.auth.ThriftServer-test | backtype.storm.config | STORM-1238 - Getting issue details... STATUS | Test secure ThriftServer | NONE |
| backtype.storm.security.auth.auth-test | backtype.storm.config backtype.storm.daemon.common backtype.storm.daemon.nimbus backtype.storm.testing backtype.storm.util | STORM-1301 - Getting issue details... STATUS | Test Authentication and Authorization | NONE |
| backtype.storm.security.auth.authorizer.DRPCSimpleACLAuthorizer-test | backtype.storm.config backtype.storm.util | STORM-1240 - Getting issue details... STATUS | Test DRPC Authorization | NONE |
| backtype.storm.security.auth.auto-login-module-test | backtype.storm.util | STORM-1241 - Getting issue details... STATUS | Test AutoTGTKrb5LoginModule | NONE |
| backtype.storm.security.auth.drpc-auth-test | backtype.storm.config backtype.storm.daemon.common backtype.storm.daemon.drpc
backtype.storm.testing backtype.storm.util | STORM-1302 - Getting issue details... STATUS | Test DRPC Authorization | NONE |
| backtype.storm.security.auth.nimbus-auth-test | backtype.storm.cluster backtype.storm.config backtype.storm.daemon.common backtype.storm.daemon.nimbus
backtype.storm.testing backtype.storm.util backtype.storm.zookeeper | STORM-1303 - Getting issue details... STATUS | Test Nimbus Authorization | NONE |
| backtype.storm.security.serialization.BlowfishTupleSerializer-test | backtype.storm.util | STORM-1249 - Getting issue details... STATUS | Test BlowfishSerializer | NONE |
| backtype.storm.serialization-test | backtype.storm.config backtype.storm.util | STORM-1250 - Getting issue details... STATUS | Test KryoValuesSerializer | NONE |
| backtype.storm.serialization.SerializationFactory-test | backtype.storm.config | STORM-1251 - Getting issue details... STATUS | Test SerializationFactory | NONE? |
| backtype.storm.stats |
backtype.storm.util | STORM-1252 - Getting issue details... STATUS | clojure methods for getting built-in statistics | NONE? |
| backtype.storm.submitter-test | backtype.storm.config backtype.storm.testing | STORM-1304 - Getting issue details... STATUS | Test ZookeeperAuthentication payload generation that is a part of StormSubmitter | NONE |
| backtype.storm.subtopology-test | backtype.storm.daemon.common backtype.storm.testing | NONE | Just remove commented out | NONE |
backtype.storm.supervisor-test | backtype.storm.cluster backtype.storm.config backtype.storm.daemon.common backtype.storm.daemon.supervisor backtype.storm.daemon.worker backtype.storm.testing backtype.storm.thrift backtype.storm.timer backtype.storm.util | STORM-1305 - Getting issue details... STATUS | Test the supervisor | NONE? |
| backtype.storm.testing | backtype.storm.cluster backtype.storm.config backtype.storm.daemon.acker backtype.storm.daemon.common backtype.storm.daemon.executor backtype.storm.daemon.nimbus backtype.storm.daemon.supervisor backtype.storm.daemon.worker backtype.storm.local-state
backtype.storm.messaging.loader backtype.storm.process-simulator backtype.storm.thrift backtype.storm.util backtype.storm.zookeeper | STORM-1281 - Getting issue details... STATUS | lots of helper functions/macros for running tests | NONE? |
| backtype.storm.testing4j | backtype.storm.LocalCluster
backtype.storm.testing backtype.storm.util | STORM-1306 - Getting issue details... STATUS | backtype.storm.Testing class for use from java | NONE |
| backtype.storm.testing4j-test |
backtype.storm.config backtype.storm.integration-test backtype.storm.testing backtype.storm.thrift backtype.storm.util | STORM-1307 - Getting issue details... STATUS | tests for the Testing4j class | NONE |
| backtype.storm.thrift | backtype.storm.config
backtype.storm.util backtype.storm.zookeeper | STORM-1258 - Getting issue details... STATUS | helper methods for manipulating thrift objects | NONE |
| backtype.storm.tick-tuple-test |
backtype.storm.config backtype.storm.daemon.common backtype.storm.testing backtype.storm.thrift | STORM-1308 - Getting issue details... STATUS | Run topology with system ticks | NONE? |
| backtype.storm.timer |
backtype.storm.util | STORM-1253 - Getting issue details... STATUS | Timer like class that uses simulated time | https://github.com/alibaba/jstorm/blob/master/jstorm-core/src/main/java/com/alibaba/jstorm/callback/AsyncLoopThread.java |
| backtype.storm.transactional-test |
backtype.storm.config backtype.storm.daemon.common backtype.storm.testing backtype.storm.util | STORM-1309 - Getting issue details... STATUS | Test transactional topologies | Just one test |
| backtype.storm.tuple |
| STORM-1275 - Getting issue details... STATUS | small helper for getting hash code of a list | NONE? |
| backtype.storm.tuple-test | backtype.storm.testing | STORM-1310 - Getting issue details... STATUS | ||
| backtype.storm.ui.core | backtype.storm.config backtype.storm.converter backtype.storm.daemon.common
backtype.storm.stats backtype.storm.thrift backtype.storm.tuple backtype.storm.ui.helpers backtype.storm.util backtype.storm.zookeeper | STORM-1311 - Getting issue details... STATUS | User Interface | Completely Different |
| backtype.storm.ui.helpers | backtype.storm.config
backtype.storm.util | STORM-1254 - Getting issue details... STATUS | Helper functions for the UI/HTTP | Completely Different |
| backtype.storm.util | STORM-1226 - Getting issue details... STATUS | util functions | Possibly https://github.com/apache/storm/blob/jstorm-import/jstorm-core/src/main/java/com/alibaba/jstorm/utils/JStormUtils.java | |
| backtype.storm.utils-test | backtype.storm.config backtype.storm.util | STORM-1255 - Getting issue details... STATUS | test some of utils | Possibly https://github.com/apache/storm/blob/jstorm-import/jstorm-core/src/test/java/com/alibaba/jstorm/utils/JStormUtilsTest.java |
| backtype.storm.utils.ZookeeperServerCnxnFactory-test | STORM-1256 - Getting issue details... STATUS | Test ZookeeperServerCnxnFactory | NONE | |
| backtype.storm.versioned-store-test | backtype.storm.testing | STORM-1313 - Getting issue details... STATUS | Test VersionedStore | NONE |
| backtype.storm.worker-test | backtype.storm.daemon.common backtype.storm.daemon.worker
backtype.storm.testing backtype.storm.util | STORM-1312 - Getting issue details... STATUS | Test Worker | NONE |
| backtype.storm.zookeeper | backtype.storm.config
backtype.storm.util | STORM-1257 - Getting issue details... STATUS | Test Zookeeper | https://github.com/alibaba/jstorm/blob/master/jstorm-core/src/main/java/com/alibaba/jstorm/zk/Zookeeper.java |
| storm.trident.integration-test | backtype.storm.testing backtype.storm.util storm.trident.testing | STORM-1315 - Getting issue details... STATUS | Run trident topolgies | NONE? |
| storm.trident.state-test | backtype.storm.config backtype.storm.testing backtype.storm.util storm.trident.testing | STORM-1316 - Getting issue details... STATUS | Test some of trident state | |
| storm.trident.testing | backtype.storm.LocalDRPC backtype.storm.testing backtype.storm.util | STORM-1314 - Getting issue details... STATUS | helper functions for testing trident | |
| storm.trident.tuple-test | backtype.storm.testing backtype.storm.util storm.trident.testing | STORM-1317 - Getting issue details... STATUS | test trident tuple |
The big things that change when moving from clojure is that we lose ring and hiccup for building the UI/REST services. We need to pick some alternatives for these. For the REST APIs Jersey is the most wide spread choice. hiccup is used in logviewer currently and we should look at replacing it either with static HTML + REST, like for the regular UI, or just return HTML we build ourselves and HTML escaping on parameters.
Phase 2. Port JStorm features to the new java based storm-core.
STORM-1319 - Getting issue details... STATUS
The following is an evaluation of major feature differences between storm and JStorm
| Feature | Apache Storm 0.11.0-SNAPSHOT (and expected pull requests) | JStorm-2.1.0/JStorm2.0.4 | Notes | JIRA to port JStorm feature |
|---|---|---|---|---|
| Scheduler | Even, Default, Isolation, Multi-tenant, RAS(work in progress) |
| The scheduler interface is pluggable, so we should be able to support both schedulers if needed. | STORM-1320 - Getting issue details... STATUS |
| Nimbus HA | Support for a pool of nimbus servers. Once Blobstore is merged in, "leader election" and "state storage" will be separate. | Support for configuring more than one backup nimbus. When the master nimbus is down, the most appropriate spare nimbus (topologies on disk most closely match the records in ZooKeeper) will be chosen to be promoted. | Need to evaluate the strengths and weaknesses of each and decide on updates to storm if any. | STORM-1321 - Getting issue details... STATUS |
| Topology Structure | worker 1->* executor 1->* task | worker 1-> task | Need to evaluate if removing executors will add enough benefit to developers/performance that we can drop it from architecture. Probably need resource aware re-balancing or Jstorm rebalancing that can support changing parallelism before this can happen. | STORM-1322 - Getting issue details... STATUS |
| Topology Master | None exactly. The Heartbeat Server (Currently under review) reduces load on ZK, but it is not really the same and may be a complement to TopologyMaster | New system bolt "topology master" was added, which is responsible for collecting task heartbeat info of all tasks and reporting the info to nimbus. Besides task heartbeat info, it also can be used to dispatch control messages within the topology. Topology master significantly reduces the amount of read/write to ZooKeeper. Before this change, ZooKeeper was the bottleneck for deploying big clusters and topologies. | Need to evaluate how this impacts storm architecture especially around security. | STORM-1323 - Getting issue details... STATUS |
| Backpressure | Bang-Bang controller on Disruptor queue capacity using ZooKeeper for broadcast. |
| STORM-1324 - Getting issue details... STATUS | |
| Monitoring of task execute thread | Potential Pull Request, but none right now. | Monitors the status of the execute thread of tasks. It is effective to find the slow bolt in a topology, and potentially uncovers deadlock as well. | Yes we should do this | STORM-1325 - Getting issue details... STATUS |
| Message processing | Deserialization happens on the netty thread Serialization happens after the send queue when batching is happening. |
| The two sound equivalent now, but we should talk to see if there are other optimizations needed. | STORM-1326 - Getting issue details... STATUS |
| Tuple Batching | Batching in DisruptorQueue | Do batch before sending tuple to transfer queue and support for adjusting the batch size dynamically according to samples of actual batch size sent out for past intervals. | Should evaluate both implementations, and see which is better for performance, and possible if we can/should move some of the dynamic batching logic into disruptor. | STORM-1327 - Getting issue details... STATUS |
| Grouping | Load aware balancing in shuffle grouping |
| We should look at combining both of these to have shuffle look at both distance and load to decide where to send a tuple. | STORM-1328 - Getting issue details... STATUS |
| web-UI | Yes | Different | Does someone know a good UI designer that we can use? I don't really like either of them (Bobby) but that is just me | STORM-1339 - Getting issue details... STATUS |
| metric system | IMetric and IMetricConsumer |
| Ideally we should have a way to display most/system metrics in the UI. IMetric is too generic to make this happen, but we cannot completely drop support for it. But perhaps we need to depricate it if the JStorm metrics are much better. | STORM-1329 - Getting issue details... STATUS |
| rebalance command | Basic functionality of rebalance | Besides rebalance, scale-out/in by updating the number of workers, ackers, spouts & bolts dynamically without stopping topology. Routing is updated dynamically within upstream components. | dynamic routing with some groupings is difficult to get right when there is state, we need to be sure this is well documented, and might want to disallow it for some groupings without a force flag. | STORM-1330 - Getting issue details... STATUS |
| list command | List information of topologies | List information of all topologies, all supervisors, and JStorm version | more info is good, but we want it human readable too. perhaps with a machine readable option too | STORM-1331 - Getting issue details... STATUS |
| zktool command | N/A | Supports some ZooKeeper operations, e.g. "list", "read"… | Will need to be evaluated for security | STORM-1332 - Getting issue details... STATUS |
| metricsMonitor command | N/A | Allows toggling on/off some metrics which may impact topology performance | Sounds great | STORM-1333 - Getting issue details... STATUS |
| restart command | N/A | Restart a topology. Besides restart, this command can also update the topology configuration. | Sounds great | STORM-1334 - Getting issue details... STATUS |
| update_topology command | N/A | Update jars and configuration dynamically for a topology, without stopping the topology. | Sounds great, should work will with blob-storm | STORM-1335 - Getting issue details... STATUS |
| cgroup | N/A | Supports controlling the upper limit of CPU core usage for a worker using cgroups | Sounds like a good start, will be nice to integrate it with RAS requests too. | STORM-1336 - Getting issue details... STATUS |
| logging |
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| Need to evaluate differences and see what we want long term | STORM-1337 - Getting issue details... STATUS |
| Worker classloader (isolation) | N/A - uses shading for most dependencies | The "worker classloader" avoids problem of re-loading classes | This sounds great | STORM-1338 - Getting issue details... STATUS |
| Multi-thread of spout | NA | There are two modes of spout, "single-thread" and "multi-thread" in JStorm. The "single-thread" mode is simliar to Storm while the "multi-thread" mode separates the processing of ack/fail and nextTuple to two threads. It means we can stay in nextTuple for a long time without any side effect on ack/fail. | This improves the response and throughput of spout | STORM-1358 - Getting issue details... STATUS |