Jonathan Eagles created YARN-3448:
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Summary: Add Rolling Time To Lives Level DB Plugin Capabilities
Key: YARN-3448
URL: https://issues.apache.org/jira/browse/YARN-3448
Project: Hadoop YARN
Issue Type: Improvement
Reporter: Jonathan Eagles
For large applications, the majority of the time in LeveldbTimelineStore is
spent deleting old entities record at a time. A write lock is held during the
entire deletion phase which in practice can be hours. An alternative is to
create a rolling set of databases that age out and can be efficiently removed
via a recursive directory delete. The removes the lock in the deletion thread
and clients and servers can share access to the underlying database which
already implements its only internal locking mechanism.
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