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Re: OIV TOOL ERROR - Hadoop - [mail # user]
...Make sure you have same *hadoop-core*.jar* and all the librariesincluded in the Hadoop lib directory in the classpath.It looks like can not find the classorg.apache.hadoop.log.metrics.EventC...
   Author: Yanbo Liang, 2014-07-16, 11:37
Re: Not able to place enough replicas - Hadoop - [mail # user]
...Maybe the user 'test' has no privilege of write operation.You can refer the ERROR log like:org.apache.hadoop.security.UserGroupInformation: PriviledgedActionExceptionas:test (auth:SIMPLE)201...
   Author: Yanbo Liang, 2014-07-15, 02:59
Re: Request for a pointer to a MapReduce Program tutorial - Hadoop - [mail # user]
...May be you can reference >   2013/12/27 Sitaraman Vilayannur  ...
   Author: Yanbo Liang, 2013-12-27, 14:54
Re: Finding mean and median python streaming - Hadoop - [mail # user]
...Because each Reducer is just the local mean and median of the data which are shuffled to that Reducer.   2013/4/5 jamal sasha  ...
   Author: Yanbo Liang, 2013-04-06, 11:58
Re: Provide context to map function - Hadoop - [mail # user]
...protected void map(KEYIN key, VALUEIN value,                      Context context) throws IOException, InterruptedException {   &n...
   Author: Yanbo Liang, 2013-04-02, 07:48
Re: - Hadoop - [mail # user]
...You can get detail information from the Greenplum website: http://www.greenplum.com/products/pivotal-hd  2013/3/28 oualid ait wafli  ...
   Author: Yanbo Liang, 2013-03-28, 15:24
Re: FSEditLog won't log the change if one file size is changed? - Hadoop - [mail # user]
...The metadata did not include file size, so if client ask file size to the DataNode which stored the last block.  2013/1/17 Zheng Yong  ...
   Author: Yanbo Liang, 2013-01-18, 10:03
Re: which part of Hadoop is responsible of distributing the input file fragments to datanodes? - Hadoop - [mail # dev]
...I guess you means to set your own strategy of block distribution. If this, just hack the code as following clue: FSNamesystem.getAdditionalBlock() ---> BlockManager.chooseTarget()  -...
   Author: Yanbo Liang, 2012-11-15, 08:13
Re: Unable to build Hadoop from source - Hadoop - [mail # dev]
...It means that there are one failure test case in your build. You can go to hadoop-common-project/hadoop-common/target/surefile-report/ directory to check to output and log in order to find t...
   Author: Yanbo Liang, 2012-09-29, 09:22
10 failures when run test on hadoop-common-project - Hadoop - [mail # dev]
...Hi All,  I just run the test code of hadoop-common-project with revision 1364560. It produced 10 FAILURES after I typed "mvn test" under the folder of "hadoop-common-project". But the l...
   Author: Yanbo Liang, 2012-07-23, 10:50
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