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Re: VOTE: HDFS-347 merge - HDFS - [mail # dev]
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...Since the merge vote passed, I have merged the HDFS-347 branch to trunk. Leaving the JIRA open for now until we also do the merge to branch-2. Colin, thanks a ton for the monster contr...
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Author: Aaron T. Myers,
2013-04-13, 02:16
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Re: VOTE: HDFS-347 merge - HDFS - [mail # dev]
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...I'm +1 as well. I've reviewed much of the code as well and have personally seen it running in production at several different sites. I agree with Todd that it's a substantial improvement in ...
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Author: Aaron T. Myers,
2013-04-11, 05:00
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[HDFS-4657] If incremental BR is received before first full BR NN will log a line for every block on a DN - HDFS - [issue]
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...This can impact restart times pretty substantially if the DNs have a lot of blocks, and since the FSNS write lock is held while processing the block report clients will not make any progress...
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http://issues.apache.org/jira/browse/HDFS-4657
Author: Aaron T. Myers,
2013-04-05, 20:56
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[HDFS-4658] Standby NN will log that it has received a block report "after becoming active" - HDFS - [issue]
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...Even when in the standby state the following line will sometimes be logged:INFO blockmanagement.BlockManager: BLOCK* processReport: Received first block report from 172.21.3.106:50010 after ...
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http://issues.apache.org/jira/browse/HDFS-4658
Author: Aaron T. Myers,
2013-04-04, 15:05
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[HDFS-4656] DN heartbeat loop can be briefly tight - HDFS - [issue]
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...The DN hearbeat loop looks roughly like this:if (now - timeOfLastHeartbeat > configuredHeartbeatInterval) { // do heartbeat}timeToWait = configuredHeartbeatInterval - (now - ti...
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http://issues.apache.org/jira/browse/HDFS-4656
Author: Aaron T. Myers,
2013-04-04, 00:48
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[HDFS-4655] DNA_FINALIZE is logged as being an unknown command by the DN when received from the standby NN - HDFS - [issue]
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...This is harmless since the alternative is just to log the command as being ignored, but this bug results in a somewhat concerning error message appearing in the logs....
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http://issues.apache.org/jira/browse/HDFS-4655
Author: Aaron T. Myers,
2013-04-02, 15:07
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[HDFS-4614] FSNamesystem#getContentSummary should use getPermissionChecker helper method - HDFS - [issue]
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...HDFS-4222 added this helper method and called it in most places, but missed one....
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http://issues.apache.org/jira/browse/HDFS-4614
Author: Aaron T. Myers,
2013-03-20, 14:04
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[HDFS-4591] HA clients can fail to fail over while Standby NN is performing long checkpoint - HDFS - [issue]
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...Clients know to fail over to talk to the Active NN when they perform an RPC to the Standby NN and it throws a StandbyException. However, most places in the code that check if the NN is in th...
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http://issues.apache.org/jira/browse/HDFS-4591
Author: Aaron T. Myers,
2013-03-14, 14:05
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[HDFS-3256] HDFS considers blocks under-replicated if topology script is configured with only 1 rack - HDFS - [issue]
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...HDFS treats the mere presence of a topology script being configured as evidence that there are multiple racks. If there is in fact only a single rack, the NN will try to place the blocks on ...
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http://issues.apache.org/jira/browse/HDFS-3256
Author: Aaron T. Myers,
2013-03-14, 12:40
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[HDFS-4592] Default values for access time precision are out of sync between hdfs-default.xml and the code - HDFS - [issue]
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...In hdfs-default.xml we have:<property> <name>dfs.namenode.accesstime.precision</name> <value>3600000</value> <description>...
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http://issues.apache.org/jira/browse/HDFS-4592
Author: Aaron T. Myers,
2013-03-13, 14:06
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