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From Hari Shreedharan <hshreedha...@cloudera.com>
Subject Re: IOException with HDFS-Sink:flushOrSync
Date Tue, 14 May 2013 02:28:44 GMT
Looks like CDH4.2.1 does have that patch: http://archive.cloudera.com/cdh4/cdh/4/hadoop-2.0.0-cdh4.2.1.CHANGES.txt
(but it was not in CDH4.1.2)


Hari 

-- 
Hari Shreedharan


On Monday, May 13, 2013 at 7:23 PM, Rahul Ravindran wrote:

> We are using cdh 4.1.2 - Hadoop version 2.0.0. Looks like cdh 4.2.1 also uses the same
Hadoop version. Any suggestions on any mitigations?
> 
> Sent from my phone.Excuse the terseness.
> 
> On May 13, 2013, at 7:12 PM, Hari Shreedharan <hshreedharan@cloudera.com (mailto:hshreedharan@cloudera.com)>
wrote:
> 
> > What version of Hadoop are you using? Looks like you are getting hit by https://issues.apache.org/jira/browse/HADOOP-6762.

> > 
> > 
> > Hari 
> > 
> > -- 
> > Hari Shreedharan
> > 
> > 
> > On Monday, May 13, 2013 at 6:50 PM, Matt Wise wrote:
> > 
> > > So we've just had this happen twice to two different flume machines... we're
using the HDFS sink as well, but ours is writing to an S3N:// URL. Both times our sink stopped
working and the filechannel clogged up immediately causing serious problems. A restart of
Flume worked -- but the filechannel was so backed up at that point that it took a good long
while to get Flume started up again properly.
> > > 
> > > Anyone else seeing this behavior?
> > > 
> > > (oh, and we're running flume 1.3.0)
> > > On May 7, 2013, at 8:42 AM, Rahul Ravindran <rahulrv@yahoo.com (mailto:rahulrv@yahoo.com)>
wrote:
> > > > Hi,
> > > >    We have noticed this a few times now where we appear to have an IOException
from HDFS and this stops draining the channel until the flume process is restarted. Below
are the logs: namenode-v01-00b is the active namenode (namenode-v01-00a is standby). We are
using Quorum Journal Manager for our Namenode HA, but there was no Namenode failover which
was initiated. If this is an expected error, should flume handle it and gracefully retry (thereby
not requiring a restart)?
> > > > Thanks,
> > > > ~Rahul.
> > > > 
> > > > 7 May 2013 06:35:02,494 WARN  [hdfs-hdfs-sink4-call-runner-2] (org.apache.flume.sink.hdfs.BucketWriter.append:378)
 - Caught IOException writing to HDFSWriter (IOException flush:java.io.IOException: Failed
on local exception: java.nio.channels.ClosedByInterruptException; Host Details : local host
is: "flumefs-v01-10a.a.com/10.40.85.170 (http://flumefs-v01-10a.a.com/10.40.85.170)"; destination
host is: "namenode-v01-00a.a.com (http://namenode-v01-00a.a.com)":8020; ). Closing file (hdfs://nameservice1/user/br/data_platform/eventstream/event/flumefs-v01-10a-4//event.1367891734983.tmp)
and rethrowing exception.
> > > > 07 May 2013 06:35:02,494 WARN  [hdfs-hdfs-sink4-call-runner-2] (org.apache.flume.sink.hdfs.BucketWriter.append:384)
 - Caught IOException while closing file (hdfs://nameservice1/user/br/data_platform/eventstream/event/flumefs-v01-10a-4//event.1367891734983.tmp).
Exception follows.
> > > > java.io.IOException: IOException flush:java.io.IOException: Failed on
local exception: java.nio.channels.ClosedByInterruptException; Host Details : local host is:
"flumefs-v01-10a.a.com/10.40.85.170 (http://flumefs-v01-10a.a.com/10.40.85.170)"; destination
host is: "namenode-v01-00a.a.com (http://namenode-v01-00a.a.com)":8020;
> > > >   at org.apache.hadoop.hdfs.DFSOutputStream.flushOrSync(DFSOutputStream.java:1617)
> > > >   at org.apache.hadoop.hdfs.DFSOutputStream.hflush(DFSOutputStream.java:1499)
> > > >   at org.apache.hadoop.hdfs.DFSOutputStream.sync(DFSOutputStream.java:1484)
> > > >   at org.apache.hadoop.fs.FSDataOutputStream.sync(FSDataOutputStream.java:116)
> > > >   at org.apache.flume.sink.hdfs.HDFSDataStream.sync(HDFSDataStream.java:95)
> > > >   at org.apache.flume.sink.hdfs.BucketWriter.doFlush(BucketWriter.java:345)
> > > >   at org.apache.flume.sink.hdfs.BucketWriter.access$500(BucketWriter.java:53)
> > > >   at org.apache.flume.sink.hdfs.BucketWriter$4.run(BucketWriter.java:310)
> > > >   at org.apache.flume.sink.hdfs.BucketWriter$4.run(BucketWriter.java:308)
> > > >   at org.apache.flume.sink.hdfs.BucketWriter.runPrivileged(BucketWriter.java:143)
> > > >   at org.apache.flume.sink.hdfs.BucketWriter.flush(BucketWriter.java:308)
> > > >   at org.apache.flume.sink.hdfs.BucketWriter.append(BucketWriter.java:396)
> > > >   at org.apache.flume.sink.hdfs.HDFSEventSink$2.call(HDFSEventSink.java:729)
> > > >   at org.apache.flume.sink.hdfs.HDFSEventSink$2.call(HDFSEventSink.java:727)
> > > >   at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
> > > >   at java.util.concurrent.FutureTask.run(FutureTask.java:138)
> > > >   at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> > > >   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> > > >   at java.lang.Thread.run(Thread.java:662)
> > > > 07 May 2013 06:35:02,495 WARN  [SinkRunner-PollingRunner-DefaultSinkProcessor]
(org.apache.flume.sink.hdfs.HDFSEventSink.process:456)  - HDFS IO error
> > > > java.io.IOException: IOException flush:java.io.IOException: Failed on
local exception: java.nio.channels.ClosedByInterruptException; Host Details : local host is:
"flumefs-v01-10a.a.com/10.40.85.170 (http://flumefs-v01-10a.a.com/10.40.85.170)"; destination
host is: "namenode-v01-00a.a.com (http://namenode-v01-00a.a.com)":8020;
> > > >   at org.apache.hadoop.hdfs.DFSOutputStream.flushOrSync(DFSOutputStream.java:1617)
> > > >   at org.apache.hadoop.hdfs.DFSOutputStream.hflush(DFSOutputStream.java:1499)
> > > >   at org.apache.hadoop.hdfs.DFSOutputStream.sync(DFSOutputStream.java:1484)
> > > >   at org.apache.hadoop.fs.FSDataOutputStream.sync(FSDataOutputStream.java:116)
> > > >   at org.apache.flume.sink.hdfs.HDFSDataStream.sync(HDFSDataStream.java:95)
> > > >   at org.apache.flume.sink.hdfs.BucketWriter.doFlush(BucketWriter.java:345)
> > > >   at org.apache.flume.sink.hdfs.BucketWriter.access$500(BucketWriter.java:53)
> > > >   at org.apache.flume.sink.hdfs.BucketWriter$4.run(BucketWriter.java:310)
> > > >   at org.apache.flume.sink.hdfs.BucketWriter$4.run(BucketWriter.java:308)
> > > >   at org.apache.flume.sink.hdfs.BucketWriter.runPrivileged(BucketWriter.java:143)
> > > >   at org.apache.flume.sink.hdfs.BucketWriter.flush(BucketWriter.java:308)
> > > >   at org.apache.flume.sink.hdfs.BucketWriter.append(BucketWriter.java:396)
> > > >   at org.apache.flume.sink.hdfs.HDFSEventSink$2.call(HDFSEventSink.java:729)
> > > >   at org.apache.flume.sink.hdfs.HDFSEventSink$2.call(HDFSEventSink.java:727)
> > > >   at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
> > > >   at java.util.concurrent.FutureTask.run(FutureTask.java:138)
> > > >   at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> > > >   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> > > >   at java.lang.Thread.run(Thread.java:662)
> > > > 07 May 2013 06:35:05,350 WARN  [hdfs-hdfs-sink1-call-runner-5] (org.apache.flume.sink.hdfs.BucketWriter.append:378)
 - Caught IOException writing to HDFSWriter (IOException flush:java.io.IOException: Failed
on local exception: java.nio.channels.ClosedByInterruptException; Host Details : local host
is: "flumefs-v01-10a.a.com/10.40.85.170 (http://flumefs-v01-10a.a.com/10.40.85.170)"; destination
host is: "namenode-v01-00b.a.com (http://namenode-v01-00b.a.com)":8020; ). Closing file (hdfs://nameservice1/user/br/data_platform/eventstream/event/flumefs-v01-10a-1//event.1367891734999.tmp)
and rethrowing exception.
> > > > 07 May 2013 06:35:05,351 WARN  [hdfs-hdfs-sink1-call-runner-5] (org.apache.flume.sink.hdfs.BucketWriter.append:384)
 - Caught IOException while closing file (hdfs://nameservice1/user/br/data_platform/eventstream/event/flumefs-v01-10a-1//event.1367891734999.tmp).
Exception follows.
> > > > java.io.IOException: IOException flush:java.io.IOException: Failed on
local exception: java.nio.channels.ClosedByInterruptException; Host Details : local host is:
"flumefs-v01-10a.a.com/10.40.85.170 (http://flumefs-v01-10a.a.com/10.40.85.170)"; destination
host is: "namenode-v01-00b.a.com (http://namenode-v01-00b.a.com)":8020;
> > > >   at org.apache.hadoop.hdfs.DFSOutputStream.flushOrSync(DFSOutputStream.java:1617)
> > > >   at org.apache.hadoop.hdfs.DFSOutputStream.hflush(DFSOutputStream.java:1499)
> > > >   at org.apache.hadoop.hdfs.DFSOutputStream.sync(DFSOutputStream.java:1484)
> > > >   at org.apache.hadoop.fs.FSDataOutputStream.sync(FSDataOutputStream.java:116)
> > > >   at org.apache.flume.sink.hdfs.HDFSDataStream.sync(HDFSDataStream.java:95)
> > > >   at org.apache.flume.sink.hdfs.BucketWriter.doFlush(BucketWriter.java:345)
> > > >   at org.apache.flume.sink.hdfs.BucketWriter.access$500(BucketWriter.java:53)
> > > >   at org.apache.flume.sink.hdfs.BucketWriter$4.run(BucketWriter.java:310)
> > > >   at org.apache.flume.sink.hdfs.BucketWriter$4.run(BucketWriter.java:308)
> > > >   at org.apache.flume.sink.hdfs.BucketWriter.runPrivileged(BucketWriter.java:143)
> > > >   at org.apache.flume.sink.hdfs.BucketWriter.flush(BucketWriter.java:308)
> > > >   at org.apache.flume.sink.hdfs.HDFSEventSink$3.call(HDFSEventSink.java:743)
> > > >   at org.apache.flume.sink.hdfs.HDFSEventSink$3.call(HDFSEventSink.java:741)
> > > >   at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
> > > >   at java.util.concurrent.FutureTask.run(FutureTask.java:138)
> > > >   at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> > > >   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> > > >   at java.lang.Thread.run(Thread.java:662)
> > > > 07 May 2013 06:35:05,352 WARN  [SinkRunner-PollingRunner-DefaultSinkProcessor]
(org.apache.flume.sink.hdfs.HDFSEventSink.process:456)  - HDFS IO error
> > > > java.io.IOException: IOException flush:java.io.IOException: Failed on
local exception: java.nio.channels.ClosedByInterruptException; Host Details : local host is:
"flumefs-v01-10a.a.com/10.40.85.170 (http://flumefs-v01-10a.a.com/10.40.85.170)"; destination
host is: "namenode-v01-00b.a.com (http://namenode-v01-00b.a.com)":8020;
> > > >   at org.apache.hadoop.hdfs.DFSOutputStream.flushOrSync(DFSOutputStream.java:1617)
> > > >   at org.apache.hadoop.hdfs.DFSOutputStream.hflush(DFSOutputStream.java:1499)
> > > >   at org.apache.hadoop.hdfs.DFSOutputStream.sync(DFSOutputStream.java:1484)
> > > >   at org.apache.hadoop.fs.FSDataOutputStream.sync(FSDataOutputStream.java:116)
> > > >   at org.apache.flume.sink.hdfs.HDFSDataStream.sync(HDFSDataStream.java:95)
> > > >   at org.apache.flume.sink.hdfs.BucketWriter.doFlush(BucketWriter.java:345)
> > > >   at org.apache.flume.sink.hdfs.BucketWriter.access$500(BucketWriter.java:53)
> > > >   at org.apache.flume.sink.hdfs.BucketWriter$4.run(BucketWriter.java:310)
> > > >   at org.apache.flume.sink.hdfs.BucketWriter$4.run(BucketWriter.java:308)
> > > >   at org.apache.flume.sink.hdfs.BucketWriter.runPrivileged(BucketWriter.java:143)
> > > >   at org.apache.flume.sink.hdfs.BucketWriter.flush(BucketWriter.java:308)
> > > >   at org.apache.flume.sink.hdfs.HDFSEventSink$3.call(HDFSEventSink.java:743)
> > > >   at org.apache.flume.sink.hdfs.HDFSEventSink$3.call(HDFSEventSink.java:741)
> > > >   at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
> > > >   at java.util.concurrent.FutureTask.run(FutureTask.java:138)
> > > >   at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> > > >   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> > > >   at java.lang.Thread.run(Thread.java:662)
> > > > 07 May 2013 06:35:07,497 WARN  [hdfs-hdfs-sink4-call-runner-8] (org.apache.flume.sink.hdfs.BucketWriter.append:378)
 - Caught IOException writing to HDFSWriter (IOException flush:java.io.IOException: Failed
on local exception: java.nio.channels.ClosedByInterruptException; Host Details : local host
is: "flumefs-v01-10a.a.com/10.40.85.170 (http://flumefs-v01-10a.a.com/10.40.85.170)"; destination
host is: "namenode-v01-00a.a.com (http://namenode-v01-00a.a.com)":8020; ). Closing file (hdfs://nameservice1/user/br/data_platform/eventstream/event/flumefs-v01-10a-4//event.1367891734983.tmp)
and rethrowing exception.
> > > > 07 May 2013 06:35:07,497 WARN  [hdfs-hdfs-sink4-call-runner-8] (org.apache.flume.sink.hdfs.BucketWriter.append:384)
 - Caught IOException while closing file (hdfs://nameservice1/user/br/data_platform/eventstream/event/flumefs-v01-10a-4//event.1367891734983.tmp).
Exception follows.
> > > > java.io.IOException: IOException flush:java.io.IOException: Failed on
local exception: java.nio.channels.ClosedByInterruptException; Host Details : local host is:
"flumefs-v01-10a.a.com/10.40.85.170 (http://flumefs-v01-10a.a.com/10.40.85.170)"; destination
host is: "namenode-v01-00a.a.com (http://namenode-v01-00a.a.com)":8020;
> > > >   at org.apache.hadoop.hdfs.DFSOutputStream.flushOrSync(DFSOutputStream.java:1617)
> > > >   at org.apache.hadoop.hdfs.DFSOutputStream.hflush(DFSOutputStream.java:1499)
> > > > 
> > > > 
> > > > 
> > > 
> > > 
> > > 
> > 


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