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Re: Maps running - how to increase? - Hadoop - [mail # user]
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...Is that setting in the hadoop-site.xml file on every node? Each tasktracker reads in that file once and sets its max map tasks from that. There's no way to control this setting on a per-job ...
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Author: Aaron Kimball,
2009-08-06, 17:59
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Re: Help in running hadoop from eclipse - Hadoop - [mail # user]
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...May I ask why you're trying to run the NameNode in Eclipse? This is likely going to cause you lots of classpath headaches. I think your current problem is that it can't find its config files...
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Author: Aaron Kimball,
2009-08-06, 17:52
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Re: namenode -upgrade problem - Hadoop - [mail # user]
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...The only time you would need to upgrade is if you've increased the Hadoop version but are retaining the same HDFS :) So, that's the normal case. What does "netstat --listening --numeri...
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Author: Aaron Kimball,
2009-08-05, 19:21
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Re: namenode -upgrade problem - Hadoop - [mail # user]
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...Are you sure you stopped all the daemons? Use 'sudo jps' to make sure :) - Aaron On Mon, Aug 3, 2009 at 7:26 PM, bharath vissapragada wrote: ...
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Author: Aaron Kimball,
2009-08-05, 17:32
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Re: how to dump data from a mysql cluster to hdfs? - Hadoop - [mail # user]
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...mysqldump to local files on all 50 nodes, scp them to datanodes, and then bin/hadoop fs -put? - Aaron On Mon, Aug 3, 2009 at 8:15 PM, Min Zhou wrote: ...
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Author: Aaron Kimball,
2009-08-05, 17:27
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Re: questions about HDFS file access synchronization - Hadoop - [mail # user]
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...On Wed, Aug 5, 2009 at 6:09 AM, Zhang Bingjun (Eddy) wrote: There is no sync() call in HDFS. A will read whatever portion of B's data has already been committed to disk by the d...
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Author: Aaron Kimball,
2009-08-05, 17:22
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Re: how to get out of Safe Mode? - Hadoop - [mail # user]
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...For future reference, $ bin/hadoop dfsadmin safemode -leave will also just cause HDFS to exit safemode forcibly. - Aaron On Wed, Aug 5, 2009 at 1:04 AM, Amandeep Khurana wr...
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Author: Aaron Kimball,
2009-08-05, 17:18
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Re: A few questions about Hadoop and hard-drive failure handling. - Hadoop - [mail # user]
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...On Fri, Jul 24, 2009 at 6:48 AM, Steve Loughran wrote: +1! ...
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Author: Aaron Kimball,
2009-07-24, 18:02
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Re: DiskChecker$DiskErrorException in TT logs - Hadoop - [mail # user]
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...Amandeep, Does the job fail after that happens? Are there any WARN or ERROR lines in the log nearby, or any exceptions? Three possibilities I can think of: You may have con...
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Author: Aaron Kimball,
2009-07-24, 18:00
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Re: hdfs question when replacing dead node... - Hadoop - [mail # user]
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...How fast did you re-run fsck after re-joining the node? fsck returns data based on the latest block reports from datanodes -- these are scheduled to run (I think) every 15 minutes, so the Na...
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Author: Aaron Kimball,
2009-07-24, 02:21
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