[jira] Commented: (ZOOKEEPER-828) BookKeeper client: Out of memory error

["Flavio Paiva Junqueira (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-828?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12891988#action_12891988 ] 

Flavio Paiva Junqueira commented on ZOOKEEPER-828:
--------------------------------------------------

This is what I got while reading 10M 1k-byte entries from a 4-2 bookie configuration:

{noformat}
Jul 24, 2010 7:33:18 AM org.jboss.netty.channel.DefaultChannelFuture
WARNING: An exception was thrown by ChannelFutureListener.
java.lang.OutOfMemoryError: GC overhead limit exceeded
Jul 24, 2010 7:33:22 AM org.jboss.netty.channel.socket.nio.NioWorker
WARNING: Unexpected exception in the selector loop.
java.lang.OutOfMemoryError: GC overhead limit exceeded
Jul 24, 2010 7:33:36 AM org.jboss.netty.channel.socket.nio.NioWorker
WARNING: Unexpected exception in the selector loop.
java.lang.OutOfMemoryError: GC overhead limit exceeded
Jul 24, 2010 7:33:41 AM org.jboss.netty.channel.socket.nio.NioWorker
WARNING: Unexpected exception in the selector loop.
java.lang.OutOfMemoryError: GC overhead limit exceeded
Jul 24, 2010 7:33:57 AM org.jboss.netty.channel.socket.nio.NioWorker
WARNING: Unexpected exception in the selector loop.
java.lang.OutOfMemoryError: GC overhead limit exceeded
Exception in thread "NIOServerFactory" java.lang.OutOfMemoryError: GC overhead limit exceeded
	at java.util.Arrays.copyOfRange(Arrays.java:3209)
	at java.lang.String.<init>(String.java:216)
	at java.lang.StringBuilder.toString(StringBuilder.java:430)
	at org.apache.bookkeeper.proto.BookieServer.processPacket(BookieServer.java:182)
	at org.apache.bookkeeper.proto.NIOServerFactory$Cnxn.readRequest(NIOServerFactory.java:306)
	at org.apache.bookkeeper.proto.NIOServerFactory$Cnxn.doIO(NIOServerFactory.java:204)
	at org.apache.bookkeeper.proto.NIOServerFactory.run(NIOServerFactory.java:114)
ERROR - [main-SendThread(wilbur1:2181):ClientCnxn$1@419] - from main-SendThread(wilbur1:2181)
java.lang.OutOfMemoryError: GC overhead limit exceeded
	at java.util.HashMap.newKeyIterator(HashMap.java:839)
	at java.util.HashMap$KeySet.iterator(HashMap.java:873)
	at java.util.HashSet.iterator(HashSet.java:153)
	at sun.nio.ch.SelectorImpl.processDeregisterQueue(SelectorImpl.java:127)
	at sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:69)
	at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:69)
	at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:80)
	at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1066)
Jul 24, 2010 7:38:38 AM org.jboss.netty.channel.socket.nio.NioWorker
WARNING: Unexpected exception in the selector loop.
java.lang.OutOfMemoryError: GC overhead limit exceeded
Jul 24, 2010 7:38:38 AM org.jboss.netty.channel.socket.nio.NioWorker
{noformat}

> BookKeeper client: Out of memory error
> --------------------------------------
>
>                 Key: ZOOKEEPER-828
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-828
>             Project: Zookeeper
>          Issue Type: Bug
>          Components: contrib-bookkeeper
>    Affects Versions: 3.3.1
>            Reporter: Flavio Paiva Junqueira
>
> Error while reading a large number of entries.

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