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https://issues.apache.org/jira/browse/HBASE-2087?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12852619#action_12852619
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stack commented on HBASE-2087:
------------------------------
+1 on patch. Its a big improvement even though it means lots of ugly logs.
We can revisit the latter later. I'd say change the 500ms to 1s sleep at least
since unlikely compaction will complete in this time. You wanted to change the
name of checkStoreFileCount? Change it on commit?
> The wait on compaction because "Too many store files" holds up all flushing
> ---------------------------------------------------------------------------
>
> Key: HBASE-2087
> URL: https://issues.apache.org/jira/browse/HBASE-2087
> Project: Hadoop HBase
> Issue Type: Bug
> Reporter: stack
> Fix For: 0.20.4
>
> Attachments: HBASE-2087.patch
>
>
> The method MemStoreFlusher#checkStoreFileCount is called from flushRegion.
> flushRegion is called by MemStoreFlusher#run thread. If the
> checkStoreFileCount finds too many store files, it'll stick around waiting on
> a compaction to happen. While its hanging, the MemStoreFlusher#run is held
> up. No other region can flush. Meantime WALs will be rolling and memory
> will be accumulating writes.
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