[HBASE-12912] Cache Configuration used during scanner creation

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Assignee: Unassigned
• Reporter: John Leach
• Created: 23/Jan/15 21:45
• Updated: 17/Jun/22 18:55
• Resolved: 31/Oct/15 21:19

Description

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...