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Flume, mail # user - Flume is replaying log for hours now


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Re: Flume is replaying log for hours now
Brock Noland 2013-08-08, 13:05
Note the dual and backup checkpoint configs here:

http://flume.apache.org/FlumeUserGuide.html#file-channel
On Thu, Aug 8, 2013 at 7:37 AM, Anat Rozenzon <[EMAIL PROTECTED]> wrote:

> I use 3.5G but I can change it to 5G.
>
> Not sure I understand what you mean about dual checkpoint, this is my
> configuration for each of the three channels, should I change it?
>
> collector.channels.mc1.type = file
>
> collector.channels.mc1.checkpointDir=/home/flume/collector1/channels/mc1/checkpoint
> collector.channels.mc1.dataDirs=/home/flume/collector1/channels/mc1/data
> collector.channels.mc1.capacity=100000000
> collector.channels.mc1.transactionCapacity=10000
> collector.channels.mc1.use-fast-replay=true
>
>
>
> On Thu, Aug 8, 2013 at 3:19 PM, Brock Noland <[EMAIL PROTECTED]> wrote:
>
>> use-fast-replay would help but you'd need 4-5GB of heap per channel. With
>> heaps that large you use be using dual checkpointing to avoid this.
>>
>> Here is the thread doing the replay:
>>
>> "lifecycleSupervisor-1-0" prio=10 tid=0x00007f040472c800 nid=0x1332b runnable [0x00007f03f84ce000]
>>    java.lang.Thread.State: RUNNABLE
>>         at org.apache.flume.channel.file.FlumeEventQueue.remove(FlumeEventQueue.java:194)
>>         - locked <0x00000007256d3dc8> (a org.apache.flume.channel.file.FlumeEventQueue)
>>         at org.apache.flume.channel.file.ReplayHandler.processCommit(ReplayHandler.java:405)
>>         at org.apache.flume.channel.file.ReplayHandler.replayLog(ReplayHandler.java:328)
>>         at org.apache.flume.channel.file.Log.doReplay(Log.java:503)
>>         at org.apache.flume.channel.file.Log.replay(Log.java:430)
>>         at org.apache.flume.channel.file.FileChannel.start(FileChannel.java:302)
>>         - locked <0x00000007256d2e38> (a org.apache.flume.channel.file.FileChannel)
>>         at org.apache.flume.lifecycle.LifecycleSupervisor$MonitorRunnable.run(LifecycleSupervisor.java:251)
>>         - locked <0x00000007256d2e38> (a org.apache.flume.channel.file.FileChannel)
>>         at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
>>         at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:351)
>>         at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:178)
>>         at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178)
>>         at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
>>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>>         at java.lang.Thread.run(Thread.java:722)
>>
>>
>>
>> On Thu, Aug 8, 2013 at 12:52 AM, Anat Rozenzon <[EMAIL PROTECTED]> wrote:
>>
>>> Hi,
>>>
>>> I'm trying to restart Flume. My setup is:
>>>
>>> Acro source => File channel 1 => HDFS sink
>>>                    => File channel 2 => Another HDFS sink
>>>                    => File channel 3 => File sink
>>>
>>> But it seem to be doing replayLog for hours now, after seeing this
>>> yesterday, I even tried setting use-fast-replay=true, but it didn't help.
>>>
>>> Each file channel capacity is 100000000, is this too high for Flume? I
>>> started on lower number but then it complained that the channel is getting
>>> filled so I made it higher.
>>>
>>> My log is repeatedly writing such lines:
>>> 08 Aug 2013 01:36:22,856 INFO  [lifecycleSupervisor-1-1]
>>> (org.apache.flume.channel.file.ReplayHandler.replayLog:293)  - Read 3240000
>>> records
>>> 08 Aug 2013 01:36:41,324 INFO  [lifecycleSupervisor-1-0]
>>> (org.apache.flume.channel.file.ReplayHandler.replayLog:293)  - Read 3350000
>>> records
>>> 08 Aug 2013 01:38:35,794 INFO  [lifecycleSupervisor-1-1]
>>> (org.apache.flume.channel.file.ReplayHandler.replayLog:293)  - Read 3250000
>>> records
>>> 08 Aug 2013 01:40:48,759 INFO  [lifecycleSupervisor-1-1]
>>> (org.apache.flume.channel.file.ReplayHandler.replayLog:293)  - Read 3260000
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