[ https://issues.apache.org/jira/browse/HBASE-14370?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14876396#comment-14876396 ]
Ted Yu commented on HBASE-14370: -------------------------------- Waiting for green branch-1.x build before integrating to those branches. > Use separate thread for calling ZKPermissionWatcher#refreshNodes() > ------------------------------------------------------------------ > > Key: HBASE-14370 > URL: https://issues.apache.org/jira/browse/HBASE-14370 > Project: HBase > Issue Type: Bug > Affects Versions: 0.98.0 > Reporter: Ted Yu > Assignee: Ted Yu > Fix For: 2.0.0, 1.2.0, 1.3.0, 0.98.15, 1.0.3, 1.1.3 > > Attachments: 14370-0.98-v10.txt, 14370-branch-1-v10.txt, > 14370-branch-1-v10.txt, 14370-v1.txt, 14370-v10.txt, 14370-v3.txt, > 14370-v5.txt, 14370-v7.txt, 14370-v8.txt, 14370-wait-nofity-v2.txt, > 14370-wait-nofity.txt, hbase-14370_v4.patch, test-acl3-branch-1.stack > > > I came off a support case (0.98.0) where main zk thread was seen doing the > following: > {code} > at > org.apache.hadoop.hbase.security.access.ZKPermissionWatcher.refreshAuthManager(ZKPermissionWatcher.java:152) > at > org.apache.hadoop.hbase.security.access.ZKPermissionWatcher.refreshNodes(ZKPermissionWatcher.java:135) > at > org.apache.hadoop.hbase.security.access.ZKPermissionWatcher.nodeChildrenChanged(ZKPermissionWatcher.java:121) > at > org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.process(ZooKeeperWatcher.java:348) > at > org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:519) > at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:495) > {code} > There were 62000 nodes under /acl due to lack of fix from HBASE-12635, > leading to slowness in table creation because zk notification for region > offline was blocked by the above. > The attached patch separates refreshNodes() call into its own thread. > Thanks to Enis and Devaraj for offline discussion. -- This message was sent by Atlassian JIRA (v6.3.4#6332)