John Leach created HBASE-13378: ---------------------------------- Summary: RegionScannerImpl synchronized for READ_UNCOMMITTED Isolation Levels Key: HBASE-13378 URL: https://issues.apache.org/jira/browse/HBASE-13378 Project: HBase Issue Type: New Feature Reporter: John Leach Priority: Minor
This block of code below coupled with the close method could be changed so that READ_UNCOMMITTED does not synchronize. {CODE:JAVA} // synchronize on scannerReadPoints so that nobody calculates // getSmallestReadPoint, before scannerReadPoints is updated. IsolationLevel isolationLevel = scan.getIsolationLevel(); synchronized(scannerReadPoints) { this.readPt = getReadpoint(isolationLevel); scannerReadPoints.put(this, this.readPt); } {CODE} This hotspots for me under heavy get requests. -- This message was sent by Atlassian JIRA (v6.3.4#6332)