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Re: need some help understanding NN quorum edit log - HDFS - [mail # dev]
...Yep, that's right.  -Todd  On Wed, Oct 24, 2012 at 4:58 PM, Sujee Maniyam  wrote:     Todd Lipcon Software Engineer, Cloudera...
   Author: Todd Lipcon, 2012-10-25, 00:55
[HDFS-4025] QJM: Sychronize past log segments to JNs that missed them - HDFS - [issue]
...Currently, if a JournalManager crashes and misses some segment of logs, and then comes back, it will be re-added as a valid part of the quorum on the next log roll. However, it will not have...
http://issues.apache.org/jira/browse/HDFS-4025    Author: Todd Lipcon, 2012-10-19, 18:52
[HDFS-2872] Add sanity checks during edits loading that generation stamps are non-decreasing - HDFS - [issue]
...In 0.23 and later versions, we have a txid per edit, and the loading process verifies that there are no gaps. Lacking this in 1.0, we can use generation stamps as a proxy - the OP_SET_GENERA...
http://issues.apache.org/jira/browse/HDFS-2872    Author: Todd Lipcon, 2012-10-17, 19:27
[HDFS-2877] If locking of a storage dir fails, it will remove the other NN's lock file on exit - HDFS - [issue]
...In Storage.tryLock(), we call lockF.deleteOnExit() regardless of whether we successfully lock the directory. So, if another NN has the directory locked, then we'll fail to lock it the first ...
http://issues.apache.org/jira/browse/HDFS-2877    Author: Todd Lipcon, 2012-10-17, 19:27
[HDFS-3330] If GetImageServlet throws an Error or RTE, response has HTTP "OK" status - HDFS - [issue]
...Currently in GetImageServlet, we catch Exception but not other Errors or RTEs. So, if the code ends up throwing one of these exceptions, the "response.sendError()" code doesn't run, but the ...
http://issues.apache.org/jira/browse/HDFS-3330    Author: Todd Lipcon, 2012-10-17, 19:27
[HDFS-3678] Edit log files are never being purged from 2NN - HDFS - [issue]
...Seeing the following NPE in the SecondaryNameNode when it tries to purge storage after a checkpoint:12/07/17 19:05:22 WARN namenode.FSImage: Unable to purge old storagejava.lang.NullPointerE...
http://issues.apache.org/jira/browse/HDFS-3678    Author: Todd Lipcon, 2012-10-17, 14:21
[HDFS-4049] hflush performance regression due to nagling delays - HDFS - [issue]
...HDFS-3721 reworked the way that packets are mirrored through the pipeline in the datanode. This caused two write() calls where there used to be one, which interacts badly with nagling so tha...
http://issues.apache.org/jira/browse/HDFS-4049    Author: Todd Lipcon, 2012-10-17, 14:21
Re: [VOTE] Merge HDFS-3077 (QuorumJournalManager) branch to trunk - HDFS - [mail # dev]
...Thanks, Sanjay and Suresh.  I've merged the branch into trunk. Will take care of merging the CHANGES.txt lists, etc, tomorrow, and start working on the agreed-upon improvements early ne...
   Author: Todd Lipcon, 2012-10-11, 08:12
[HDFS-4015] Safemode should count and report orphaned blocks - HDFS - [issue]
...The safemode status currently reports the number of unique reported blocks compared to the total number of blocks referenced by the namespace. However, it does not report the inverse: blocks...
http://issues.apache.org/jira/browse/HDFS-4015    Author: Todd Lipcon, 2012-10-06, 11:45
[HDFS-2276] src/test/unit tests not being run in mavenized HDFS - HDFS - [issue]
...There are about 5 tests in src/test/unit that are no longer being run....
http://issues.apache.org/jira/browse/HDFS-2276    Author: Todd Lipcon, 2012-10-06, 00:44
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