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https://issues.apache.org/jira/browse/ACCUMULO-862?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Mike Drob resolved ACCUMULO-862.
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Resolution: Cannot Reproduce
If this issue is seen again, please file a new JIRA with steps to reproduce.
> master slow start
> -----------------
>
> Key: ACCUMULO-862
> URL: https://issues.apache.org/jira/browse/ACCUMULO-862
> Project: Accumulo
> Issue Type: Bug
> Components: master
> Affects Versions: 1.4.1, 1.4.2
> Environment: very large cluster
> Reporter: Eric Newton
> Priority: Minor
>
> Master start-up was delayed by many minutes because it discovered only 3
> loggers per second. When jstack'ed, it was stuck here:
> {noformat}
> "master" prio=10 tid=0x00007ffff086a800 nid=0xa331 in Object.wait()
> [0x00007fffc565c000]
> java.lang.Thread.State: WAITING (on object monitor)
> at java.lang.Object.wait(Native Method)
> - waiting on <0x00000000bdd5f940> (a
> org.apache.zookeeper.ClientCnxn$Packet)
> at java.lang.Object.wait(Object.java:485)
> at org.apache.zookeeper.ClientCnxn.submitRequest(ClientCnxn.java:1345)
> - locked <0x00000000bdd5f940> (a
> org.apache.zookeeper.ClientCnxn$Packet)
> at org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1247)
> at org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1277)
> at
> org.apache.accumulo.core.zookeeper.ZooUtil.recursiveDelete(ZooUtil.java:104)
> at
> org.apache.accumulo.core.zookeeper.ZooUtil.recursiveDelete(ZooUtil.java:118)
> at
> org.apache.accumulo.server.zookeeper.ZooReaderWriter.recursiveDelete(ZooReaderWriter.java:67)
> at
> org.apache.accumulo.server.master.state.DeadServerList.delete(DeadServerList.java:66)
> at
> org.apache.accumulo.server.master.Master.newLogger(Master.java:2198)
> at
> org.apache.accumulo.server.master.TabletServerLoggers.scanZooKeeperForUpdates(TabletServerLoggers.java:93)
> - locked <0x00000000c2157b68> (a
> org.apache.accumulo.server.master.TabletServerLoggers)
> at org.apache.accumulo.server.master.Master.run(Master.java:2076)
> at org.apache.accumulo.server.master.Master.main(Master.java:2178)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.apache.accumulo.start.Main$1.run(Main.java:89)
> at java.lang.Thread.run(Thread.java:662)
> {noformat}
> Due to many stops/start of loggers, it's possible that there were "dead
> logger" entries that needed to be deleted. Future starts were not slow.
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