[jira] [Created] (HBASE-27077) Synchronous API calls for Split, Merge, and Compaction operations for testing

["Istvan Toth (Jira)" <ji...@apache.org>]

Istvan Toth created HBASE-27077:
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             Summary: Synchronous API calls for Split, Merge, and Compaction operations for testing
                 Key: HBASE-27077
                 URL: https://issues.apache.org/jira/browse/HBASE-27077
             Project: HBase
          Issue Type: Improvement
            Reporter: Istvan Toth


While generally split, merge, and compaction operations are too slow for synchrounous calls, for many tests we do need to wait until these operations are finished to be able to check their results.
At least in the Phoenix tests, we also need to to do this while the EnvirenmentEdge clock is stopped.
The polling method Admin.getLastMajorCompactionTimestamp() the we used for compactions has stopped working with EnvironmentEdgeManager in 2.5, see HBASE-27058 for details. We've also had similar issues in the past, where new versions made the previous workaround for synchronous operations fail.

A longer-term solution for the problem would be having Synchronous API calls for testing, which block on the client side until the requested operation is finished.

These could be added as variants to Admin / AsyncAdmin, or could be somewhere else, it doesn't really matter, as these would not be well suited for production use anyway.



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