You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@hbase.apache.org by "John Leach (JIRA)" <ji...@apache.org> on 2015/04/01 17:13:53 UTC
[jira] [Created] (HBASE-13378) RegionScannerImpl synchronized for
READ_UNCOMMITTED Isolation Levels
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)