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Re: VOTE: HDFS-347 merge - HDFS - [mail # dev]
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...On Wed, Feb 20, 2013 at 2:49 PM, Suresh Srinivas wrote: This was just an error with the "consolidate merge patch". Like I said in the previous email, these patches are just for J...
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Author: Todd Lipcon,
2013-02-20, 23:01
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Re: VOTE: HDFS-347 merge - HDFS - [mail # dev]
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...The point isn't when the consolidated patches were posted to the JIRA. The branch is on the public SVN and has been for months. The work was done incrementally on the branch, and you were we...
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Author: Todd Lipcon,
2013-02-20, 22:27
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Re: VOTE: HDFS-347 merge - HDFS - [mail # dev]
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...Hi Nicholas, I looked at your comments on the JIRA, and they all seem like trivial things that could be addressed post-merge, and none of them would affect the functionality. If Colin ...
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Author: Todd Lipcon,
2013-02-20, 20:16
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Re: VOTE: HDFS-347 merge - HDFS - [mail # dev]
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...+1 (binding) I code-reviewed almost all of the code in this branch, and also spent some time benchmarking and testing under various workloads. We've also done significant testing on cl...
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Author: Todd Lipcon,
2013-02-20, 00:11
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[HDFS-4486] Add log category for long-running DFSClient notices - HDFS - [issue]
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...There are a number of features in the DFS client which are transparent but can make a fairly big difference for performance – two in particular are short circuit reads and native check...
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http://issues.apache.org/jira/browse/HDFS-4486
Author: Todd Lipcon,
2013-02-08, 21:56
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[HDFS-3077] Quorum-based protocol for reading and writing edit logs - HDFS - [issue]
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...Currently, one of the weak points of the HA design is that it relies on shared storage such as an NFS filer for the shared edit log. One alternative that has been proposed is to depend on Bo...
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http://issues.apache.org/jira/browse/HDFS-3077
Author: Todd Lipcon,
2013-02-08, 16:42
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[HDFS-4182] SecondaryNameNode leaks NameCache entries - HDFS - [issue]
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...We recently saw an issue where a 2NN ran out of memory, even though it had a relatively small fsimage. When we looked at the heap dump, we saw that all of the memory had gone to entries in t...
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http://issues.apache.org/jira/browse/HDFS-4182
Author: Todd Lipcon,
2013-02-06, 17:05
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[HDFS-2882] DN continues to start up, even if block pool fails to initialize - HDFS - [issue]
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...I started a DN on a machine that was completely out of space on one of its drives. I saw the following:2012-02-02 09:56:50,499 FATAL org.apache.hadoop.hdfs.server.datanode.DataNode: Initiali...
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http://issues.apache.org/jira/browse/HDFS-2882
Author: Todd Lipcon,
2013-02-01, 19:29
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[HDFS-3874] Exception when client reports bad checksum to NN - HDFS - [issue]
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...We see the following exception in our logs on a cluster:2012-08-27 16:34:30,400 INFO org.apache.hadoop.hdfs.StateChange: *DIR* NameNode.reportBadBlocks2012-08-27 16:34:30,400 ERROR org.apach...
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http://issues.apache.org/jira/browse/HDFS-3874
Author: Todd Lipcon,
2013-01-28, 18:41
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[HDFS-4417] HDFS-347: fix case where local reads get disabled incorrectly - HDFS - [issue]
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...In testing HDFS-347 against HBase (thanks Jean-Daniel Cryans) we ran into the following case: a workload is running which puts a bunch of local sockets in the PeerCache the workload abates f...
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http://issues.apache.org/jira/browse/HDFS-4417
Author: Todd Lipcon,
2013-01-24, 20:24
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