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heap dump on GC overhead limit exceeded error - MapReduce - [mail # dev]
...Hi, We use the following for mapred.child.java.opts:  -Xmx3800m -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/usr/local/hadoop/hprof -XX:ErrorFile=/usr/local/hadoop/hadoop/logs/user...
   Author: Ted Yu, 2010-09-20, 01:27
[expand - 1 more] - Re: local job directory customization - MapReduce - [mail # dev]
...https://issues.apache.org/jira/browse/MAPREDUCE-2072 has been logged.  On Mon, Sep 13, 2010 at 3:43 PM, Ted Yu  wrote:  ...
   Author: Ted Yu, 2010-09-16, 04:17
[expand - 1 more] - Re: custom task cleanup even when task is killed? - MapReduce - [mail # user]
...Since I don't know what cleanup you're doing, just a reminder that you may run into: https://issues.apache.org/jira/browse/HADOOP-4829  On Mon, Sep 13, 2010 at 1:43 PM, Chase Bradford w...
   Author: Ted Yu, 2010-09-13, 20:57
Re: How to use distributed cache api - MapReduce - [mail # user]
...Consider using the following to retrieve file:             Path[] cacheFiles=DistributedCache.getFileClassPaths(conf);            ...
   Author: Ted Yu, 2010-09-07, 16:46
Re: Read After Write Consistency in HDFS - MapReduce - [mail # user]
...One possibility, due to the asynchronous nature of your loader, was that the consumer job started before all files from loader were written (propagated) completely.  Can you describe wh...
   Author: Ted Yu, 2010-09-02, 18:45
Re: Is continuous map reduce supported - MapReduce - [mail # user]
...Try this: http://hadoop.apache.org/common/docs/r0.20.0/api/org/apache/hadoop/mapred/lib/ChainReducer.html  On Wed, Sep 1, 2010 at 8:33 PM, Lance Norskog  wrote:  ...
   Author: Ted Yu, 2010-09-02, 03:48
Re: How to debug ReduceTask? - MapReduce - [mail # user]
...Have you tried http://www.karmasphere.com/ ?  On Sat, Aug 28, 2010 at 6:24 PM, Pedro Costa  wrote:  ...
   Author: Ted Yu, 2010-08-29, 03:40
Obtaining active TaskTrackers - MapReduce - [mail # dev]
...Hi, How can I obtain the list of active TaskTrackers programmatically ? I looked at machines.jsp which uses a reference to JobTracker  How do I obtain JobTracker reference from client ?...
   Author: Ted Yu, 2010-08-23, 16:02
[expand - 1 more] - Re: Null mapper? - MapReduce - [mail # user]
...You're right. You need to specify a mapper.  On Mon, Aug 16, 2010 at 3:21 PM, David Rosenstrauch wrote:  ...
   Author: Ted Yu, 2010-08-16, 22:23
[expand - 1 more] - Re: How to work around MAPREDUCE-1700 - MapReduce - [mail # user]
...Hopefully Cloudera will make a build for your needs. Before that happens, you can produce your own installation.  We do this to produce HBase 0.20.6 + HBASE-2473  Cheers  On T...
   Author: Ted Yu, 2010-08-12, 23:33
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB