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Re: hbase export very slow - HBase - [mail # user]
...Do you have a large region that the fifth map task might be working on ?CheersOn Wed, Jun 18, 2014 at 2:05 AM, ch huang  wrote: ...
   Author: Ted Yu, 2014-06-18, 16:33
Re: org.apache.hadoop.hbase.mapreduce.LoadIncrementalHFiles$3@482d59a3, java.io.IOException: java.io.IOException: No FileSystem for scheme: maprfs - HBase - [mail # user]
...Have you asked this question on MapR mailing list ?CheersOn Jun 18, 2014, at 12:14 AM, Chen Wang  wrote: ...
   Author: Ted Yu, 2014-06-18, 07:41
Re: Aborting on region error - HBase - [mail # user]
...Do you mind pastebin the entire stack trace ?10.1.110.2  is one of your datanodes, right ?CheersOn Tue, Jun 17, 2014 at 7:31 AM, yanivG  wrote: ...
   Author: Ted Yu, 2014-06-17, 23:00
Re: Why Custom Filters are more resource exhaustive then normal single column value filter - HBase - [mail # user]
...Vikram:Discussion on coprocessor may get very long.Let's focus on making your custom filter work.Do you have unit test for the custom filter ?If you limit the scan (with this filter) to one ...
   Author: Ted Yu, 2014-06-17, 14:29
Re: regions not balance? - HBase - [mail # user]
...bq. and return true, but It not worksLooking at master log, do you see balancer related logs around this time ?If there was region in transition at this moment, balancer wouldn't performbala...
   Author: Ted Yu, 2014-06-17, 03:41
Re: how to calculate all the number of store file on hbase all table ? - HBase - [mail # user]
...Please also note the following method in HRegionFileSystem (available in0.98+):  public Collection getStoreFiles(final byte[] familyName)throws IOException {CheersOn Mon, Jun 16, 2...
   Author: Ted Yu, 2014-06-16, 16:20
Re: what different between delete and deleteall in hbase shell? - HBase - [mail # user]
...Please take a look at section 3 in:http://learnhbase.wordpress.com/2013/03/02/hbase-shell-commands/CheersOn Jun 16, 2014, at 12:21 AM, ch huang  wrote: ...
   Author: Ted Yu, 2014-06-16, 08:08
Re: what difference between hdfs balance and hbase balance operation? - HBase - [mail # user]
...Hdfs balance spreads hdfs data uniformly across datanodes in the cluster. Hbase balancer tries to spread regions evenly across region servers in hbase cluster. Custom load balancer can co-lo...
   Author: Ted Yu, 2014-06-16, 08:03
Re: RegexStringComparator problem: Why pattern "u" has the same result as ".*u.*" ? - HBase - [mail # user]
...You can pass a subclass of RegexStringComparator to SingleColumnValueFilter.This subclass can use matches() to suit your needs.RegexStringComparator has been in 0.94 release for so long, its...
   Author: Ted Yu, 2014-06-16, 04:07
Re: Does compression ever improve performance? - HBase - [mail # user]
...Data block encoding enables block cache to hold more entries, therebylifting performance.You can find coverage of data block encoding in this wiki as well:https://blogs.apache.org/hbase/Chee...
   Author: Ted Yu, 2014-06-15, 22:47
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