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Cloud object storage is cheaper than multi replication local storage, thus we can put cold data to s3 to store much more data at lower price.  To be more general, doris should not lose any feature due to putting cold data to s3.

Related Research

some research related to the function, such as the advantages and disadvantages of the design, related considerations, etcThere is an implementation migrating data to s3, https://github.com/apache/incubator-doris/pull/9197. The implementation migrates whole data of tablet to s3, and once a tablet is migrated to s3, the tablet is not allowed to be written.

Detailed Design

the detailed design of the function.

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