John Leach created HBASE-12912:
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Summary: 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
Attachments: StoreScannerStall.tiff
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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