Ryota Egashira created OOZIE-2206: ------------------------------------- Summary: Change Reaper mode on ChildReaper in ZKLocksService Key: OOZIE-2206 URL: https://issues.apache.org/jira/browse/OOZIE-2206 Project: Oozie Issue Type: Bug Reporter: Ryota Egashira
OOZIE-1906 added znode cleanup thread. currently passing Reaper.Mode.REAP_INDEFINITELY, but this enforce Oozie server to keep reaping znode even after znode is cleaned up. This adds memory pressure on oozie server. Need to change to REAP_UNTIL_GONE or REAP_UNTIL_DELETE {code} reaper = new ChildReaper(zk.getClient(), LOCKS_NODE, Reaper.Mode.REAP_INDEFINITELY, getExecutorService(), ConfigurationService.getInt(services.getConf(), REAPING_THRESHOLD) * 1000, REAPING_LEADER_PATH); {code} we hit one scenario where one ZK quorum slows down for short period, causing many Zk locks not released properly, right after ChildReaper (every 5 min ) runs, which keep checking the list of Znode ever since, in the end, Oozie server hit OOM. -- This message was sent by Atlassian JIRA (v6.3.4#6332)