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HyperThreading in TaskTracker nodes? - HDFS - [mail # user]
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...I would like to get some opinions / recommendations about the pros and cons of enabling HyperThreading on TaskTracker nodes. Presumably memory could be an issue, but is there anything to be ...
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Author: Terry Healy,
2013-02-05, 15:19
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TT nodes distributed cache failure - HDFS - [mail # user]
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...Running hadoop-0.20.2 on a 20 node cluster. When running a Map/Reduce job that uses several .jars loaded into the Distributed cache, several (~4) nodes have their map jobs fails becaus...
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Author: Terry Healy,
2013-01-25, 17:48
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Map Failure reading .gz (gzip) files - HDFS - [mail # user]
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...I'm trying to run a Map-only job using .gz input format. For testing, I have one compressed log file in the input directory. If the file is un-zipped, the code works fine. Watching the...
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Author: Terry Healy,
2013-01-14, 21:25
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Re: 'Cannot roll edit log' - HDFS - [mail # user]
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...Further info: From the log of secondary NN: INFO org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode: Posted URL AAA.xxx.yyy.zzz:50070putimage=1&port=50090&machine=0.0.0.0&token=-...
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Author: Terry Healy,
2012-08-15, 16:53
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Re: 'Cannot roll edit log' - HDFS - [mail # user]
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...This situation continues and reports every 10 minutes. I even tried moving the secondary NN function to a different node. I have run TCPDump but cannot isolate the "Connection Refused" issue...
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Author: Terry Healy,
2012-08-15, 16:39
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Re: 'Cannot roll edit log' - HDFS - [mail # user]
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...Any suggestions on how to clear the error? stp-all / start-all had no effect. On 07/03/2012 04:22 PM, Brandon Li wrote: Terry Healy / [EMAIL PROTECTED] Cyber Security Operations ...
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Author: Terry Healy,
2012-07-09, 17:23
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'Cannot roll edit log' - HDFS - [mail # user]
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...Running Apache 1.0.2. The NN log is reporting that it cannot "roll the edit log" from the secondary NN. The SecondaryNameNode is running on the system referred to as xxx.yyy.254.238 in...
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Author: Terry Healy,
2012-07-03, 17:56
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Re: Unable to start NN after rack assignment attempt - HDFS - [mail # user]
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...Todd- Thanks for your reply. I went out on a limb and started digging in the source code and figures it was FSImage. So I saved it, and copied over the copy from my checkpoint director...
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Author: Terry Healy,
2012-05-18, 18:28
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Re: Unable to start NN after rack assignment attempt - HDFS - [mail # user]
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...Sorry, forgot to attach the trace: 2012-05-18 09:54:45,355 INFO org.apache.hadoop.hdfs.server.common.Storage: Number of files = 128 2012-05-18 09:54:45,379 ERROR org.apache.hadoop.hdfs...
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Author: Terry Healy,
2012-05-18, 13:57
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Unable to start NN after rack assignment attempt - HDFS - [mail # user]
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...Running Apache 1.0.2 ~12 datanodes Ran FSCK / -> OK, before, everything running as expected. Started trying to use a script to assign nodes to racks, which required several st...
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Author: Terry Healy,
2012-05-18, 13:51
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