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MapReduce, mail # user - Problem: org.apache.hadoop.mapred.ReduceTask: java.net.SocketTimeoutException: connect timed out


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Som Satpathy 2013-04-17, 01:18
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Som Satpathy 2013-04-18, 19:47
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Re: Problem: org.apache.hadoop.mapred.ReduceTask: java.net.SocketTimeoutException: connect timed out
Omkar Joshi 2013-10-03, 20:09
what was the problem? oozie problem or machine was getting rebooted where
map task ran before?

Thanks,
Omkar Joshi
*Hortonworks Inc.* <http://www.hortonworks.com>
On Thu, Apr 18, 2013 at 12:47 PM, Som Satpathy <[EMAIL PROTECTED]>wrote:

> Never mind, got it fixed.
>
> Thanks,
> Som
>
>
> On Tue, Apr 16, 2013 at 6:18 PM, Som Satpathy <[EMAIL PROTECTED]>wrote:
>
>> Hi All,
>>
>> I have just set up a CDH cluster on EC2 using cloudera manager 4.5. I
>> have been trying to run a couple of mapreduce jobs as part of an oozie
>> workflow but have been blocked by the following exception: (my reducer
>> always hangs because of this) -
>>
>> 2013-04-17 00:32:02,268 WARN org.apache.hadoop.mapred.ReduceTask:
>> attempt_201304170021_0003_r_000000_0 copy failed:
>> attempt_201304170021_0003_m_000000_0 from
>> ip-10-174-49-51.us-west-1.compute.internal
>> 2013-04-17 00:32:02,269 WARN org.apache.hadoop.mapred.ReduceTask:
>> java.net.SocketTimeoutException: connect timed out
>>         at java.net.PlainSocketImpl.socketConnect(Native Method)
>>         at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:351)
>>         at
>> java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:213)
>>         at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:200)
>>         at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
>>         at java.net.Socket.connect(Socket.java:529)
>>         at sun.net.NetworkClient.doConnect(NetworkClient.java:158)
>>         at sun.net.www.http.HttpClient.openServer(HttpClient.java:395)
>>         at sun.net.www.http.HttpClient.openServer(HttpClient.java:530)
>>         at sun.net.www.http.HttpClient.<init>(HttpClient.java:234)
>>         at sun.net.www.http.HttpClient.New(HttpClient.java:307)
>>         at sun.net.www.http.HttpClient.New(HttpClient.java:324)
>>         at
>> sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:970)
>>         at
>> sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:911)
>>         at
>> sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:836)
>>         at
>> org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.getInputStream(ReduceTask.java:1573)
>>         at
>> org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.setupSecureConnection(ReduceTask.java:1530)
>>         at
>> org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.getMapOutput(ReduceTask.java:1466)
>>         at
>> org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.copyOutput(ReduceTask.java:1360)
>>         at
>> org.apache.hadoop.mapred.ReduceTask$ReduceCopier$MapOutputCopier.run(ReduceTask.java:1292)
>>
>> 2013-04-17 00:32:02,269 INFO org.apache.hadoop.mapred.ReduceTask: Task
>> attempt_201304170021_0003_r_000000_0: Failed fetch #1 from
>> attempt_201304170021_0003_m_000000_0
>> 2013-04-17 00:32:02,269 WARN org.apache.hadoop.mapred.ReduceTask:
>> attempt_201304170021_0003_r_000000_0 adding host
>> ip-10-174-49-51.us-west-1.compute.internal to penalty box, next contact in
>> 12 seconds
>>
>> Any suggestions that can help me get around this?
>>
>> Really appreciate any help here.
>>
>> Thanks,
>> Som
>>
>
>

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