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[HDFS-3373] FileContext HDFS implementation can leak socket caches - HDFS - [issue]
...As noted by Nicholas in HDFS-3359, FileContext doesn't have a close() method, and thus never calls DFSClient.close(). This means that, until finalizers run, DFSClient will hold on to its Soc...
http://issues.apache.org/jira/browse/HDFS-3373    Author: Todd Lipcon, 2012-09-29, 13:39
[HDFS-2751] Datanode drops OS cache behind reads even for short reads - HDFS - [issue]
...HDFS-2465 has some code which attempts to disable the "drop cache behind reads" functionality when the reads are <256KB (eg HBase random access). But this check was missing in the close()...
http://issues.apache.org/jira/browse/HDFS-2751    Author: Todd Lipcon, 2012-09-28, 22:12
[HDFS-3972] Trash emptier fails in secure HA cluster - HDFS - [issue]
...In a secure HA cluster, we're seeing the following issue on the NN when the trash emptier tries to run:WARN org.apache.hadoop.fs.TrashPolicyDefault: Trash can't list homes: java.io.IOExcepti...
http://issues.apache.org/jira/browse/HDFS-3972    Author: Todd Lipcon, 2012-09-27, 14:59
[HDFS-2798] Append may race with datanode block scanner, causing replica to be incorrectly marked corrupt - HDFS - [issue]
...When a pipeline is setup for append, the block's metadata file is renamed before the block is removed from the datanode block scanner queues. This can cause a race condition where the block ...
http://issues.apache.org/jira/browse/HDFS-2798    Author: Todd Lipcon, 2012-09-26, 01:02
[HDFS-3967] NN should bail our earlier when logs to load have a gap - HDFS - [issue]
...i was testing an HA setup with a lowered edit log retention period, and ended up in a state where one of the two NNs had fallen too far behind, such that it couldn't start up again (due to t...
http://issues.apache.org/jira/browse/HDFS-3967    Author: Todd Lipcon, 2012-09-21, 21:40
[HDFS-2991] failure to load edits: ClassCastException - HDFS - [issue]
...In doing scale testing of trunk at r1291606, I hit the following:java.io.IOException: Error replaying edit log at offset 1354251Recent opcode offsets: 1350014 1350176 1350312 1354251 &n...
http://issues.apache.org/jira/browse/HDFS-2991    Author: Todd Lipcon, 2012-09-20, 23:23
[HDFS-3956] QJM: purge temporary files when no longer within retention period - HDFS - [issue]
...After doing a bunch of fault testing, I noticed that the JNs had a bunch of temporary files left around in their journal directories which were no longer within the retention period. For exa...
http://issues.apache.org/jira/browse/HDFS-3956    Author: Todd Lipcon, 2012-09-20, 00:43
[HDFS-3950] QJM: misc TODO cleanup, improved log messages, etc - HDFS - [issue]
...General JIRA for a bunch of miscellaneous clean-up in the QJM branch: fix most remaining TODOs improve some log/error messages add some more sanity checks where appropriate address any findb...
http://issues.apache.org/jira/browse/HDFS-3950    Author: Todd Lipcon, 2012-09-20, 00:30
[HDFS-3955] QJM: Make acceptRecovery() atomic - HDFS - [issue]
...Per one of the TODOs in Journal.java, there is currently a lack of atomicity in the acceptRecovery() code path. In particular, we have the following actions executed non-atomically: Download...
http://issues.apache.org/jira/browse/HDFS-3955    Author: Todd Lipcon, 2012-09-19, 19:57
[HDFS-3943] QJM: remove currently unused "md5sum" field. - HDFS - [issue]
...Per later discussion in HDFS-3859, it turns out to be rather difficult to integrate md5sum verification into QJM at this point. The crux of the issue is that different replicas may be semant...
http://issues.apache.org/jira/browse/HDFS-3943    Author: Todd Lipcon, 2012-09-17, 22:52
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