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答复: Does HBase RegionServer benefit from OS Page Cache - HBase - [mail # user]
...Maybe we should adopt some ideas from RDBMS ? In MySQL area: Innodb storage engine has a buffer pool(just like current block cache), caches both compressed and uncompressed pages in latest i...
   Author: 谢良, 2013-03-26, 03:01
Is it feasible to delete qualified tombstones during minor compaction? - HBase - [mail # dev]
...Currently, all tombstones only get cleaned up with major compactions. I guess the original design probably considered that we need to ensure whether there are other versions of the deleted k...
   Author: 谢良, 2013-03-14, 09:41
答复: HBase CheckSum vs Hadoop CheckSum - HBase - [mail # user]
...comments in line  Regards, Liang ________________________________________ 发件人: Jean-Marc Spaggiari [[EMAIL PROTECTED]] 发送时间: 2013年2月26日 20:03 收件人: user 主题: HBase CheckSum vs Hadoop Chec...
   Author: 谢良, 2013-02-26, 12:24
[expand - 2 more] - 答复: 答复: 答复: GC frequency - HBase - [mail # user]
...comments in line ________________________________________ 发件人: Varun Sharma [[EMAIL PROTECTED]] 发送时间: 2013年2月21日 17:21 收件人: [EMAIL PROTECTED] 主题: Re: 答复: 答复: GC frequency  This is a ver...
   Author: 谢良, 2013-02-21, 09:39
答复: Some notes from the HBase developer Pow-Wow - HBase - [mail # dev]
...Yes, i am able to hear the recording as well :)  Regards, Liang ________________________________________ 发件人: Dave Wang [[EMAIL PROTECTED]] 发送时间: 2013年2月21日 0:28 收件人: [EMAIL PROTECTED] ...
   Author: 谢良, 2013-02-21, 01:56
答复: question about the scanner ordering for gets/scans - HBase - [mail # dev]
...IMHO, this sorting is not necessary,  to be honest, i had tried to exchange the order of sfScanners&memStoreScanners several days before just out of curiosity, and passed all the test c...
   Author: 谢良, 2013-01-31, 03:59
答复: GC pause issues - HBase - [mail # user]
...Hi Varun,  Please note if you try to increase new generation size, then the "ParNew" time will be up accordingly, and CMS YGC is also a STW. could you have a try to reduce memstore size...
   Author: 谢良, 2013-01-25, 02:07
答复: Region server Memory Use is double the -Xmx setting - HBase - [mail # user]
...Please set "-XX:MaxDirectMemorySize" explicitly,  else the default is taking the value like -Xmx in currenty JDK6, at least for jdk1.6.30+  Best Regards, Liang ____________________...
   Author: 谢良, 2013-01-23, 02:19
[expand - 1 more] - 答复: 答复: Storing images in Hbase - HBase - [mail # user]
...HBase is not the best choice for blob(photo/image/...) storage(file sizes are ofter smaller than tens of MB).   Here are several blob storage systems : google blob storage : https://dev...
   Author: 谢良, 2013-01-06, 06:14
[expand - 2 more] - 答复: Re:Re: 答复: Multiple regionservers on a single node - HBase - [mail # user]
...Sure, here it is : -Xmx49152m -Xms49152m -Xmn1024m -Xss256k -XX:MaxDirectMemorySize=1024m -XX:MaxPermSize=512m -XX:PermSize=512m -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/home/work/l...
   Author: 谢良, 2012-12-11, 08:42
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