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Re: Replication terminology "master-master" - HBase - [mail # dev]
...Hmm... From that angle all we really have is master-slave replication, without limit as how it can be setup.A master can be slave too, and a slave a master, and cycles are allowed.I find "cy...
   Author: lars hofhansl, 2014-11-25, 04:33
[expand - 1 more] - Re: how to explain read/write performance change after modifying the hfile.block.cache.size? - HBase - [mail # user]
...That would explain it if memstores are flushed due to global memory pressure.But cache and memstore size are (unfortunately) configured independently. The memstore heap portion would be 40% ...
   Author: lars hofhansl, 2014-11-20, 20:31
[expand - 5 more] - Re: Changing it so we do NOT archive hfiles by default - HBase - [mail # dev]
...Interesting that removing the files (which is just a metadata operation in the NN) is slower than writing the files with all their data in the first place.Is it really the NN that is the gat...
   Author: lars hofhansl, 2014-11-20, 20:22
Re: [VOTE] The 3rd HBase 0.98.8 release candidate (RC2) is available, vote closing 11/17/2014 - HBase - [mail # dev]
...+1- using various build close to 0.98.8 all the time (for profiling, etc)Specifically for this release:- downloaded hadoop2-bin, and -src- inspected the tarballs- ran in local mode and with ...
   Author: lars hofhansl, 2014-11-17, 22:54
[expand - 4 more] - HBase - Semantic Versioning - HBase - [mail # dev]
...As we approach the released of HBase 1.0.0, your PMC has been working hard on documenting the exact compatibility guarantees we plan to support for HBase versions going forward.You can find ...
   Author: lars hofhansl, 2014-11-16, 01:09
[expand - 1 more] - [ANNOUNCE] HBase 0.94.25 is available for download - HBase - [mail # user]
...The HBase Team is pleased to announce the immediate release of HBase 0.94.25.Download it from your favorite Apache mirror [1].This release has also been pushed to Apache's maven repository.A...
   Author: lars hofhansl, 2014-11-16, 00:54
Re: Next 0.98.8 RC coming soon - HBase - [mail # dev]
...Also, please do not forget to vote on 0.94.25 (and I mean not just Ted :))      From: Ted Yu  To: "[EMAIL PROTECTED]"   Sent: Wednesday, November 12, 2014 6:54 ...
   Author: lars hofhansl, 2014-11-13, 07:04
[expand - 2 more] - [VOTE] The 1st hbase 0.94.25 release candidate is available for download, vote closes 11/14/2014 - HBase - [mail # dev]
...The 1st 0.94.25 RC is available for download at http://people.apache.org/~larsh/hbase-0.94.25-rc0/Signed with my code signing key: C7CFE328HBase 0.94.25 is a bug fix release with 9 fixes:[HB...
   Author: lars hofhansl, 2014-11-09, 02:04
Re: Region split during mapreduce - HBase - [mail # user]
...I do not believe that to be true.HBase only uses Region boundaries to identify useful scan ranges during the setup of the job. These ranges will work regardless of whether the number of regi...
   Author: lars hofhansl, 2014-11-01, 07:20
Re: Hbase unstable, master and regionservers crashes every night at ~ 00:07 UTC - HBase - [mail # user]
...We had an issue similar to this for a while. Every Sunday between 1am and 6am we'd experience ZK timeouts.Turned out it was the weekly RAID check across all our boxes that caused ZK to timeo...
   Author: lars hofhansl, 2014-10-29, 05:25
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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