StoreFile Level Compaction Locking
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Key: HBASE-3797
URL: https://issues.apache.org/jira/browse/HBASE-3797
Project: HBase
Issue Type: Improvement
Reporter: Nicolas Spiegelberg
Assignee: Nicolas Spiegelberg
Priority: Minor
Multithreaded compactions (HBASE-1476) will solve the problem of major
compactions clogging high-priority minor compactions. However, there is still
a problem here. Since compactions are store-level, the store undergoing major
compaction will have it's storefile count increase during the major. We really
need a way to allow multiple outstanding compactions per store.
compactSelection() should lock/reserve the files being used for compaction.
This will also allow us to know what we're going to compact when inserting into
the CompactSplitThread and make more informed priority queueing decisions.
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