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Posted to dev@accumulo.apache.org by "David Medinets (JIRA)" <ji...@apache.org> on 2012/06/13 23:51:43 UTC
[jira] [Commented] (ACCUMULO-635) Check Existence of Zookeeper
Recovery Node Before Reading It.
[ https://issues.apache.org/jira/browse/ACCUMULO-635?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13294676#comment-13294676 ]
David Medinets commented on ACCUMULO-635:
-----------------------------------------
This is the original code:
{code}
ZooReaderWriter.getInstance().getChildren(zroot + Constants.ZRECOVERY, new Watcher() {
@Override
public void process(WatchedEvent event) {
nextEvent.event("Noticed recovery changes", event.getType());
}
});
{code}
> Check Existence of Zookeeper Recovery Node Before Reading It.
> -------------------------------------------------------------
>
> Key: ACCUMULO-635
> URL: https://issues.apache.org/jira/browse/ACCUMULO-635
> Project: Accumulo
> Issue Type: Bug
> Reporter: David Medinets
> Assignee: David Medinets
> Priority: Minor
>
> I don't know why but my errors have started to display the following message. I tracked down the source. Basically the Zookeeper node is being read without first making sure that it exists.
> {code}
> org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode
> = NoNode for /accumulo/b519799c-3a51-4c9b-af21-96d577e2c11f/recovery
> at org.apache.zookeeper.KeeperException.create(KeeperException.java:111)
> at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
> at org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1448)
> at org.apache.accumulo.core.zookeeper.ZooReader.getChildren(ZooReader.java:62)
> at org.apache.accumulo.server.master.Master.run(Master.java:2071)
> at org.apache.accumulo.server.master.Master.main(Master.java:2173)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:601)
> {code}
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