Szabolcs Bukros created HBASE-26969:
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Summary: Eliminate MOB renames when SFT is enabled
Key: HBASE-26969
URL: https://issues.apache.org/jira/browse/HBASE-26969
Project: HBase
Issue Type: Task
Components: mob
Affects Versions: 2.5.0, 3.0.0-alpha-3
Reporter: Szabolcs Bukros
Assignee: Szabolcs Bukros
MOB file compaction and flush still relies on renames even when SFT is enabled.
My proposed changes are:
* when requireWritingToTmpDirFirst is false during mob flush/compact instead
of using the temp writer we should create a different writer using a
{color:#000000}StoreFileWriterCreationTracker that writes directly to the mob
store folder{color}
* {color:#000000}these StoreFileWriterCreationTracker should be stored in the
MobStore. This would requires us to extend MobStore with a createWriter and a
finalizeWriter method to handle this{color}
* {color:#000000}refactor {color}MobFileCleanerChore to run on the RS instead
on Master to allow access to the
{color:#000000}StoreFileWriterCreationTracker{color}s to make sure the
currently written files are not cleaned up
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