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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
Re: if/when zookeeper goes down, how to recover? - HBase - [mail # user]
...Cycling old bits:http://search-hadoop.com/m/WsPol11E4ss1/Zookeeper+ec2&subj=Best+practices+for+using+zookeeper+in+an+Amazon+EC2+environmentOn Jun 14, 2014, at 2:10 PM, S Ahmed  wrote:&n...
   Author: Ted Yu, 2014-06-14, 21:57
[HBASE-11309] Remove USE_POSITION_BEFORE and related code from PrefixTreeSeeker - HBase - [issue]
...This constant is always false in PrefixTreeSeeker.We can remove this variable and the code depending on this boolean to be true.Thanks to Matt Corgan who confirmed the above....
http://issues.apache.org/jira/browse/HBASE-11309    Author: Ted Yu, 2014-06-14, 21:30
Re: master caught a ClosedChannelException - HBase - [mail # user]
...The exception means an attempt is made to invoke or complete an I/Ooperation upon channel that is closed.The ip's in log snippets were different. Have you checked server logs onthose machine...
   Author: Ted Yu, 2014-06-14, 14:28
Re: HFile V2 vs HFile V3 - HBase - [mail # user]
...w.r.t. columnar format, there were discussions in the past:https://issues.apache.org/jira/browse/HBASE-5313?focusedCommentId=13203324&page=com.atlassian.jira.plugin.system.issuetabpanels:com...
   Author: Ted Yu, 2014-06-13, 15:42
[HBASE-11107] Provide utility method equivalent to 0.92's Result.getBytes().getSize() - HBase - [issue]
...Currently user has to write code similar to the following for replacement of Result.getBytes().getSize() :+            Cell[] cellValues = resultRow.rawCells();...
http://issues.apache.org/jira/browse/HBASE-11107    Author: Ted Yu, 2014-06-13, 12:42
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