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[HDFS-2554] Add separate metrics for missing blocks with desired replication level 1 - HDFS - [issue]
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...Some users use replication level set to 1 for datasets which are unimportant and can be lost with no worry (eg the output of terasort tests). But other data on the cluster is important and s...
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http://issues.apache.org/jira/browse/HDFS-2554
Author: Todd Lipcon,
2013-03-19, 18:53
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[HDFS-4380] Opening a file for read before writer writes a block causes NPE - HDFS - [issue]
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...JD Cryans found this issue: it seems like, if you open a file for read immediately after it's been created by the writer, after a block has been allocated, but before the block is created on...
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http://issues.apache.org/jira/browse/HDFS-4380
Author: Todd Lipcon,
2013-03-13, 22:48
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[HDFS-4128] 2NN gets stuck in inconsistent state if edit log replay fails in the middle - HDFS - [issue]
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...We saw the following issue in a cluster: The 2NN downloads an edit log segment:2012-10-29 12:30:57,433 INFO org.apache.hadoop.hdfs.server.namenode.FSImage: Reading /xxxxxxx/current/edits_000...
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http://issues.apache.org/jira/browse/HDFS-4128
Author: Todd Lipcon,
2013-03-05, 13:05
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Re: VOTE: HDFS-347 merge - HDFS - [mail # dev]
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...Hi Bikas, I completely agree with you in principle -- short circuit reads end up ceding control of the data path from the DataNode to the user applications. This has a few disadvantage...
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Author: Todd Lipcon,
2013-02-26, 22:07
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[HDFS-4304] Make FSEditLogOp.MAX_OP_SIZE configurable - HDFS - [issue]
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...Today we ran into an issue where a NN had logged a very large op, greater than the 1.5MB MAX_OP_SIZE constant. In order to successfully load the edits, we had to patch with a larger constant...
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http://issues.apache.org/jira/browse/HDFS-4304
Author: Todd Lipcon,
2013-02-23, 14:05
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Re: VOTE: HDFS-347 merge - HDFS - [mail # dev]
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...On Wed, Feb 20, 2013 at 4:04 PM, Suresh Srinivas wrote: The patches even going back as far as last September have all removed the old code path. I sort of assumed that, if you ar...
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Author: Todd Lipcon,
2013-02-21, 00:12
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Re: VOTE: HDFS-347 merge - HDFS - [mail # dev]
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...On Wed, Feb 20, 2013 at 3:31 PM, Suresh Srinivas wrote: Too bad it doesn't work in any of the normal installations... none of the packages for Hadoop would allow it to work, give...
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Author: Todd Lipcon,
2013-02-20, 23:40
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Re: VOTE: HDFS-347 merge - HDFS - [mail # dev]
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...On Wed, Feb 20, 2013 at 3:08 PM, Tsz Wo Sze wrote: Given that this is an optimization, and we have a ton of optimizations which don't yet run on Windows, I don't think that shoul...
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Author: Todd Lipcon,
2013-02-20, 23:13
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Re: VOTE: HDFS-347 merge - HDFS - [mail # dev]
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...On Wed, Feb 20, 2013 at 3:06 PM, Todd Lipcon wrote: sorry, meant to link to: https://issues.apache.org/jira/browse/HDFS-2246?focusedCommentId=13102013&page=com.atlassian.jira.plu...
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Author: Todd Lipcon,
2013-02-20, 23:06
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Re: VOTE: HDFS-347 merge - HDFS - [mail # dev]
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...On Wed, Feb 20, 2013 at 3:01 PM, Tsz Wo Sze wrote: The existing short circuit feature is insecure and was always considered a stop-gap solution. If you read the history of that f...
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Author: Todd Lipcon,
2013-02-20, 23:06
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