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[HBASE-4814] Starting an online alter when regions are splitting can leave their daughters unaltered - HBase - [issue]
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...I've seen a situation where regions were splitting almost exactly at the same time as an alter command was issued and those regions' daughters were left unaltered. It would even seem that th...
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http://issues.apache.org/jira/browse/HBASE-4814
Author: Jean-Daniel Cryans,
2013-05-03, 20:44
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[HBASE-3643] Close the filesystem handle when HRS is aborting - HBase - [issue]
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...I thought of a way to fix HBASE-3515 that has a very broad impact, so I'm creating this jira to raise awareness and gather comments.Currently when we call HRS.abort, it's still possible to d...
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http://issues.apache.org/jira/browse/HBASE-3643
Author: Jean-Daniel Cryans,
2013-05-03, 20:41
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[HBASE-2506] Too easy to OOME a RS - HBase - [issue]
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...Testing a cluster with 1GB heap, I found that we are letting the region servers kill themselves too easily when scanning using pre-fetching. To reproduce, get 10-20M rows using PE and run a ...
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http://issues.apache.org/jira/browse/HBASE-2506
Author: Jean-Daniel Cryans,
2013-05-03, 20:40
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[HBASE-8425] Per-region memstore size is missing in the new RS web UI - HBase - [issue]
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...I like that metric, right now all we have is the whole memstore size in bytes....
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http://issues.apache.org/jira/browse/HBASE-8425
Author: Jean-Daniel Cryans,
2013-04-30, 09:22
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[HBASE-8426] Opening a region failed on "Metrics source RegionServer,sub=Regions already exists!" - HBase - [issue]
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...I restarted a cluster on 0.95 (1ecd4c7e0b22bba75c76f2fc2ce369541502b6df) and some regions failed to open on their first assignment on an exception like:Caused by: org.apache.hadoop.metrics2....
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http://issues.apache.org/jira/browse/HBASE-8426
Author: Jean-Daniel Cryans,
2013-04-30, 09:22
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Re: [Question] better way to deal with Out of Memory on Region Server? - HBase - [mail # dev]
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...Inline. J-D On Fri, Apr 26, 2013 at 1:07 PM, N Dm wrote: Actually now we kill -9 on OOME. There are a few scattered jiras that aim to guard the region ...
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Author: Jean-Daniel Cryans,
2013-04-29, 21:01
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[HBASE-8390] Trunk/0.95 cannot simply compile against Hadoop 1.0 - HBase - [issue]
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...Currently we can't simply compile against Hadoop 1.0 in 0.95 and newer, we are missing a dependency in common for Apache's commons-io. Easy fix, we could just add that dependency for all the...
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http://issues.apache.org/jira/browse/HBASE-8390
Author: Jean-Daniel Cryans,
2013-04-27, 00:09
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[HBASE-8259] Snapshot backport in 0.94.6 breaks rolling restarts - HBase - [issue]
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...Aleksandr Shulman found with his nifty QA tools that 0.94.6 has an incompatible change due to HBASE-7360 (Snapshot 0.94 Backport) that breaks rolling restarts.RegionTransitionData.write() us...
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http://issues.apache.org/jira/browse/HBASE-8259
Author: Jean-Daniel Cryans,
2013-04-25, 23:20
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Re: Unscientific comparison of fully-cached zipfian reading - HBase - [mail # dev]
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...Hey guys, I published a few more numbers after talking to Stack, Elliott, and Todd (thanks guys). It's the same link BTW. First, it's interesting that the block cache is slower t...
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Author: Jean-Daniel Cryans,
2013-04-25, 22:24
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Re: writing and reading from a region at once - HBase - [mail # user]
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...Inline. J-D On Thu, Apr 25, 2013 at 1:09 PM, Aaron Zimmerman wrote: There's MVCC, so reads can happen while someone else is writing. What you should expect from HBa...
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Author: Jean-Daniel Cryans,
2013-04-25, 21:34
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