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Re: Poor HBase map-reduce scan performance - HBase - [mail # user]
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...You can try Yourkit, they have evaluation licenses. There is one gotcha: some classes are excluded by default, and this includes org.apache.* . So you need to change the default config when ...
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Author: Nicolas Liochon,
2013-05-02, 18:00
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[HBASE-8303] Increse the test timeout to 60s when they are less than 20s - HBase - [issue]
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...Short test timeouts are dangerous because: if the test is executed in the same jvm as another, GC, thread priority can play a role we don't know the machine used to execute the tests, nor wh...
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http://issues.apache.org/jira/browse/HBASE-8303
Author: Nicolas Liochon,
2013-04-27, 16:55
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[HBASE-8128] HTable#put improvements - HBase - [issue]
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...3 points: When doing a single put, we're creating an object by calling Arrays.asList we're doing a size check every 10 put. Not doing it seems simpler, better and allows to share some code b...
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http://issues.apache.org/jira/browse/HBASE-8128
Author: Nicolas Liochon,
2013-04-27, 16:55
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[HBASE-6435] Reading WAL files after a recovery leads to time lost in HDFS timeouts when using dead datanodes - HBase - [issue]
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...HBase writes a Write-Ahead-Log to revover from hardware failure. This log is written on hdfs.Through ZooKeeper, HBase gets informed usually in 30s that it should start the recovery process. ...
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http://issues.apache.org/jira/browse/HBASE-6435
Author: Nicolas Liochon,
2013-04-26, 09:38
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Re: [DISCUSS] Making hadoop 2 the default precommit for trunk ones we get green builds - HBase - [mail # dev]
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...+1 as well. On Fri, Apr 26, 2013 at 5:55 AM, Stack wrote: ...
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Author: Nicolas Liochon,
2013-04-26, 04:09
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[HBASE-6290] Add a function a mark a server as dead and start the recovery the process - HBase - [issue]
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...ZooKeeper is used a a monitoring tool: we use znode and we start the recovery process when a znode is deleted by ZK because it got a timeout. This timeout is defaulted to 90 seconds, and oft...
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http://issues.apache.org/jira/browse/HBASE-6290
Author: Nicolas Liochon,
2013-04-25, 08:52
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[HBASE-8380] NPE in HBaseClient$Connection.readResponse - HBase - [issue]
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...Stack is:2013-04-19 09:22:45,991 WARN [IPC Client (682317035) connection to ip-10-6-131-32.ec2.internal/10.6.131.32:60020 from root] ipc.HBaseClient (HBaseClient.java:run(664)) - IPC C...
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http://issues.apache.org/jira/browse/HBASE-8380
Author: Nicolas Liochon,
2013-04-24, 19:50
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[HBASE-4955] Use the official versions of surefire & junit - HBase - [issue]
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...We currently use private versions for Surefire & JUnit since HBASE-4763.This JIRA traks what we need to move to official versions.Surefire 2.11 is just out, but, after some tests, it doe...
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http://issues.apache.org/jira/browse/HBASE-4955
Author: Nicolas Liochon,
2013-04-23, 18:43
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[HBASE-8280] Add a dummy test to check build env - HBase - [issue]
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...trunk seems to be built on machines named ubuntu*precommit is on machines named hadoop*Looking at java.home on these machines, we have:hadoop1: /home/jenkins/tools/java/jdk1.6.0_27/jrehadoop...
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http://issues.apache.org/jira/browse/HBASE-8280
Author: Nicolas Liochon,
2013-04-23, 18:41
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[HBASE-7840] Enhance the java it framework to start & stop a distributed hbase & hadoop cluster - HBase - [issue]
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...Needs are to use a development version of HBase & HDFS 1 & 2.Ideally, should be nicely backportable to 0.94 to allow comparisons and regression tests between versions....
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http://issues.apache.org/jira/browse/HBASE-7840
Author: Nicolas Liochon,
2013-04-23, 18:39
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