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From Brock Noland <br...@cloudera.com>
Subject Re: Exception : Log File is null for id
Date Tue, 02 Oct 2012 11:28:19 GMT
Also, if you could send us your full log that would be great. The
email list doesn't take attachements so either:

1) post it on pastbin
or
2) zip it and mail it to me directly

Brock

On Tue, Oct 2, 2012 at 6:06 AM, Brock Noland <brock@cloudera.com> wrote:
> Hi,
>
> What version of flume? If trunk (1.3.0-SNAPSHOT) what is the last
> patch you have?
>
> Can you how us a ls -la of your data and checkpoint directories?
>
> Brock
>
> On Tue, Oct 2, 2012 at 3:43 AM, Raymond Ng <raymondair@gmail.com> wrote:
>> Just to add more info to this, I've checked the File channel where a
>> "ChannelException: Cannot acquire capacity" is reported against, and can see
>> file log-1 has the size of 0 and log-2 has over 300 MB of data, comparing
>> with another File channel which has files log-2 and log-3 both with data in
>> it but no file log-1 is found.
>>
>> sounds like log-1 is the one causing the "NullPointerException: LogFile is
>> null for id 1" below, and when I restarted flume, I get the following
>> warning.  I can confirm there was no manual tampering in the file channel
>> directory
>>
>> 2012-10-02 09:38:10,231  INFO [conf-file-poller-0]
>> DefaultLogicalNodeManager.java - Starting Channel probeFileChannel1
>> 2012-10-02 09:38:10,239  INFO [conf-file-poller-0]
>> DefaultLogicalNodeManager.java - Starting Channel probeFileChannel3
>> 2012-10-02 09:38:10,313  WARN [lifecycleSupervisor-1-2] ReplayHandler.java -
>> Hit EOF on /home/user/flume-ng/filechannel3/data/log-1
>> 2012-10-02 09:38:10,314  INFO [lifecycleSupervisor-1-1]
>> DirectMemoryUtils.java - Unable to get maxDirectMemory from VM:
>> NoSuchMethodException: sun.misc.VM.maxDirectMemory(null)
>> 2012-10-02 09:38:10,317  INFO [lifecycleSupervisor-1-1]
>> DirectMemoryUtils.java - Direct Memory Allocation:  Allocation = 1048576,
>> Allocated = 0, MaxDirectMemorySize = 954466304, Remaining = 954466304
>> 2012-10-02 09:38:10,381  WARN [lifecycleSupervisor-1-1] LogFile.java -
>> Checkpoint for file(/home/user/flume-ng/filechannel1/data/log-2) is:
>> 1349166469095, which is beyond the requested checkpoint time: 0.
>> 2012-10-02 09:38:10,381  WARN [lifecycleSupervisor-1-2] LogFile.java -
>> Checkpoint for file(/home/user/flume-ng/filechannel3/data/log-2) is:
>> 1349166991594, which is beyond the requested checkpoint time: 0.
>> 2012-10-02 09:41:52,144 ERROR [lifecycleSupervisor-1-2] ReplayHandler.java -
>> Pending takes 32103 exist after the end of replay. Duplicate messages will
>> exist in destination.
>> 2012-10-02 09:41:52,709  INFO [lifecycleSupervisor-1-2]
>> MonitoredCounterGroup.java - Component type: CHANNEL, name:
>> probeFileChannel3 started
>> 2012-10-02 09:42:31,413  WARN [lifecycleSupervisor-1-1] LogFile.java -
>> Checkpoint for file(/home/cluster_admin/flume-ng/filechannel1/data/log-3)
>> is: 1349166981020, which is beyond the requested checkpoint time: 0.
>> 2012-10-02 09:45:14,836 ERROR [lifecycleSupervisor-1-1] ReplayHandler.java -
>> Pending takes 8409 exist after the end of replay. Duplicate messages will
>> exist in destination.
>> 2012-10-02 09:45:15,453  INFO [lifecycleSupervisor-1-1]
>> MonitoredCounterGroup.java - Component type: CHANNEL, name:
>> probeFileChannel1 started
>>
>>
>> On Tue, Oct 2, 2012 at 9:19 AM, Raymond Ng <raymondair@gmail.com> wrote:
>>>
>>> Hi
>>>
>>> Could I have some advice for the following exception please, is this
>>> related to the "ChannelException: Cannot acquire capacity" which I
>>> experience from time to time
>>>
>>>
>>> 2012-10-02 09:16:53,563 ERROR [Log-BackgroundWorker] Log.java - General
>>> error in checkpoint worker
>>> java.lang.NullPointerException
>>>     at org.apache.flume.channel.file.Log.writeCheckpoint(Log.java:738)
>>>     at org.apache.flume.channel.file.Log.writeCheckpoint(Log.java:692)
>>>     at org.apache.flume.channel.file.Log.access$300(Log.java:57)
>>>     at
>>> org.apache.flume.channel.file.Log$BackgroundWorker.run(Log.java:892)
>>> 2012-10-02 09:16:56,317 ERROR
>>> [SinkRunner-PollingRunner-DefaultSinkProcessor] HDFSEventSink.java - process
>>> failed
>>> java.lang.NullPointerException: LogFile is null for id 1
>>>     at
>>> com.google.common.base.Preconditions.checkNotNull(Preconditions.java:204)
>>>     at org.apache.flume.channel.file.Log.get(Log.java:316)
>>>     at
>>> org.apache.flume.channel.file.FileChannel$FileBackedTransaction.doTake(FileChannel.java:373)
>>>     at
>>> org.apache.flume.channel.BasicTransactionSemantics.take(BasicTransactionSemantics.java:113)
>>>     at
>>> org.apache.flume.channel.BasicChannelSemantics.take(BasicChannelSemantics.java:91)
>>>     at
>>> org.apache.flume.sink.hdfs.HDFSEventSink.process(HDFSEventSink.java:383)
>>>     at
>>> org.apache.flume.sink.DefaultSinkProcessor.process(DefaultSinkProcessor.java:68)
>>>     at org.apache.flume.SinkRunner$PollingRunner.run(SinkRunner.java:147)
>>>     at java.lang.Thread.run(Thread.java:662)
>>> 2012-10-02 09:16:56,318 ERROR
>>> [SinkRunner-PollingRunner-DefaultSinkProcessor] SinkRunner.java - Unable to
>>> deliver event. Exception follows.
>>> org.apache.flume.EventDeliveryException: java.lang.NullPointerException:
>>> LogFile is null for id 1
>>>     at
>>> org.apache.flume.sink.hdfs.HDFSEventSink.process(HDFSEventSink.java:450)
>>>     at
>>> org.apache.flume.sink.DefaultSinkProcessor.process(DefaultSinkProcessor.java:68)
>>>     at org.apache.flume.SinkRunner$PollingRunner.run(SinkRunner.java:147)
>>>     at java.lang.Thread.run(Thread.java:662)
>>> Caused by: java.lang.NullPointerException: LogFile is null for id 1
>>>     at
>>> com.google.common.base.Preconditions.checkNotNull(Preconditions.java:204)
>>>     at org.apache.flume.channel.file.Log.get(Log.java:316)
>>>     at
>>> org.apache.flume.channel.file.FileChannel$FileBackedTransaction.doTake(FileChannel.java:373)
>>>     at
>>> org.apache.flume.channel.BasicTransactionSemantics.take(BasicTransactionSemantics.java:113)
>>>     at
>>> org.apache.flume.channel.BasicChannelSemantics.take(BasicChannelSemantics.java:91)
>>>     at
>>> org.apache.flume.sink.hdfs.HDFSEventSink.process(HDFSEventSink.java:383)
>>>     ... 3 more
>>> 2012-10-02 09:16:56,625 ERROR [Log-BackgroundWorker] Log.java - General
>>> error in checkpoint worker
>>> java.lang.NullPointerException
>>>     at org.apache.flume.channel.file.Log.writeCheckpoint(Log.java:738)
>>>     at org.apache.flume.channel.file.Log.writeCheckpoint(Log.java:692)
>>>     at org.apache.flume.channel.file.Log.access$300(Log.java:57)
>>>     at
>>> org.apache.flume.channel.file.Log$BackgroundWorker.run(Log.java:892)
>>> 2012-10-02 09:16:59,678 ERROR [Log-BackgroundWorker] Log.java - General
>>> error in checkpoint worker
>>> java.lang.NullPointerException
>>>     at org.apache.flume.channel.file.Log.writeCheckpoint(Log.java:738)
>>>     at org.apache.flume.channel.file.Log.writeCheckpoint(Log.java:692)
>>>     at org.apache.flume.channel.file.Log.access$300(Log.java:57)
>>>     at
>>> org.apache.flume.channel.file.Log$BackgroundWorker.run(Log.java:892)
>>> 2012-10-02 09:17:01,318 ERROR
>>> [SinkRunner-PollingRunner-DefaultSinkProcessor] HDFSEventSink.java - process
>>> failed
>>> java.lang.NullPointerException: LogFile is null for id 1
>>>     at
>>> com.google.common.base.Preconditions.checkNotNull(Preconditions.java:204)
>>>     at org.apache.flume.channel.file.Log.get(Log.java:316)
>>>     at
>>> org.apache.flume.channel.file.FileChannel$FileBackedTransaction.doTake(FileChannel.java:373)
>>>     at
>>> org.apache.flume.channel.BasicTransactionSemantics.take(BasicTransactionSemantics.java:113)
>>>     at
>>> org.apache.flume.channel.BasicChannelSemantics.take(BasicChannelSemantics.java:91)
>>>     at
>>> org.apache.flume.sink.hdfs.HDFSEventSink.process(HDFSEventSink.java:383)
>>>     at
>>> org.apache.flume.sink.DefaultSinkProcessor.process(DefaultSinkProcessor.java:68)
>>>     at org.apache.flume.SinkRunner$PollingRunner.run(SinkRunner.java:147)
>>>     at java.lang.Thread.run(Thread.java:662)
>>> 2012-10-02 09:17:01,318 ERROR
>>> [SinkRunner-PollingRunner-DefaultSinkProcessor] SinkRunner.java - Unable to
>>> deliver event. Exception follows.
>>> org.apache.flume.EventDeliveryException: java.lang.NullPointerException:
>>> LogFile is null for id 1
>>>     at
>>> org.apache.flume.sink.hdfs.HDFSEventSink.process(HDFSEventSink.java:450)
>>>     at
>>> org.apache.flume.sink.DefaultSinkProcessor.process(DefaultSinkProcessor.java:68)
>>>     at org.apache.flume.SinkRunner$PollingRunner.run(SinkRunner.java:147)
>>>     at java.lang.Thread.run(Thread.java:662)
>>> Caused by: java.lang.NullPointerException: LogFile is null for id 1
>>>     at
>>> com.google.common.base.Preconditions.checkNotNull(Preconditions.java:204)
>>>     at org.apache.flume.channel.file.Log.get(Log.java:316)
>>>     at
>>> org.apache.flume.channel.file.FileChannel$FileBackedTransaction.doTake(FileChannel.java:373)
>>>     at
>>> org.apache.flume.channel.BasicTransactionSemantics.take(BasicTransactionSemantics.java:113)
>>>     at
>>> org.apache.flume.channel.BasicChannelSemantics.take(BasicChannelSemantics.java:91)
>>>     at
>>> org.apache.flume.sink.hdfs.HDFSEventSink.process(HDFSEventSink.java:383)
>>>     ... 3 more
>>>
>>>
>>>
>>> --
>>> Rgds
>>> Ray
>>
>>
>>
>>
>> --
>> Rgds
>> Ray
>
>
>
> --
> Apache MRUnit - Unit testing MapReduce - http://incubator.apache.org/mrunit/



-- 
Apache MRUnit - Unit testing MapReduce - http://incubator.apache.org/mrunit/

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