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https://issues.apache.org/jira/browse/HBASE-12912?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Purtell updated HBASE-12912:
-----------------------------------
Fix Version/s: (was: 0.98.11)
0.98.12
Moved out to 0.98.12
> StoreScanner calls Configuration for Boolean Check on each initialization
> -------------------------------------------------------------------------
>
> Key: HBASE-12912
> URL: https://issues.apache.org/jira/browse/HBASE-12912
> Project: HBase
> Issue Type: Bug
> Reporter: John Leach
> Assignee: John Leach
> Fix For: 2.0.0, 1.0.1, 1.1.0, 0.98.12
>
> Attachments: StoreScannerStall.tiff
>
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> There is a clear CPU drain and iterator creation when creating store scanners
> under high load. Splice was running a TPCC test of our database and we are
> seeing object creation and CPU waste on the boolean check....
> Code Snippet...
> if (store != null && ((HStore)store).getHRegion() != null
> && store.getStorefilesCount() > 1) {
> RegionServerServices rsService =
> ((HStore)store).getHRegion().getRegionServerServices();
> if (rsService == null || !rsService.getConfiguration().getBoolean(
> STORESCANNER_PARALLEL_SEEK_ENABLE, false)) return;
> isParallelSeekEnabled = true;
> executor = rsService.getExecutorService();
> }
> Will attach profile...
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