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Posted to issues@hbase.apache.org by "Enis Soztutar (JIRA)" <ji...@apache.org> on 2016/06/06 23:35:21 UTC
[jira] [Created] (HBASE-15973) PeriodicMemstoreFlusher is causing
excessive flushes when back-in-time inserts are happening
Enis Soztutar created HBASE-15973:
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Summary: PeriodicMemstoreFlusher is causing excessive flushes when back-in-time inserts are happening
Key: HBASE-15973
URL: https://issues.apache.org/jira/browse/HBASE-15973
Project: HBase
Issue Type: Bug
Reporter: Enis Soztutar
Fix For: 2.0.0, 1.3.0, 1.4.0
In a production cluster, we have noticed a case where flushes were happening for 200-400KB in sizes. Turns out the periodic memstore flusher is force flushing because cells with older timestamps (in this case days old) were being inserted.
We have periodic memstore flusher with 1 hour defaulted, so in a case where replication is lagging, or phoenix secondary index rebuild or the user doing back-in-time inserts with cell timestamps older than 1 hour, we will flush extremely frequently.
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