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https://issues.apache.org/jira/browse/HBASE-15973?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Enis Soztutar resolved HBASE-15973.
-----------------------------------
Resolution: Not A Problem
I've checked the code again, we are doing the correct thing:
{code}
private void setOldestEditTimeToNow() {
if (timeOfOldestEdit == Long.MAX_VALUE) {
timeOfOldestEdit = EnvironmentEdgeManager.currentTime();
}
}
{code}
I don't have the logs saved, so closing this for now, since I am not sure
whether there were any other issues or not.
> 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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