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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