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[HDFS-4462] 2NN will fail to checkpoint after an HDFS upgrade from a pre-federation version of HDFS - HDFS - [issue]
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...The 2NN currently has logic to detect when its on-disk FS metadata needs an upgrade with respect to the NN's metadata (i.e. the layout versions are different) and in this case it will procee...
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http://issues.apache.org/jira/browse/HDFS-4462
Author: Aaron T. Myers,
2013-02-06, 12:40
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[HDFS-4448] HA NN does not start with wildcard address configured for other NN when security is enabled - HDFS - [issue]
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...Currently if one tries to configure HA NNs use the wildcard HTTP address when security is enabled, the NN will fail to start with an error like the following:java.lang.IllegalArgumentExcepti...
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http://issues.apache.org/jira/browse/HDFS-4448
Author: Aaron T. Myers,
2013-01-30, 00:37
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[HDFS-4315] DNs with multiple BPs can have BPOfferServices fail to start due to unsynchronized map access - HDFS - [issue]
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...In some nightly test runs we've seen pretty frequent failures of TestWebHdfsWithMultipleNameNodes. I've traced the root cause to an unsynchronized map access in the DataStorage class.More de...
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http://issues.apache.org/jira/browse/HDFS-4315
Author: Aaron T. Myers,
2012-12-18, 12:42
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[HDFS-2264] NamenodeProtocol has the wrong value for clientPrincipal in KerberosInfo annotation - HDFS - [issue]
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...The @KerberosInfo annotation specifies the expected server and client principals for a given protocol in order to look up the correct principal name from the config. The NamenodeProtocol has...
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http://issues.apache.org/jira/browse/HDFS-2264
Author: Aaron T. Myers,
2012-12-11, 14:09
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[HDFS-3236] NameNode does not initialize generic conf keys when started with -initializeSharedEditsDir - HDFS - [issue]
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...This means that configurations that scope the location of the name/edits/shared edits dirs by nameserice or namenode won't work with `hdfs namenode -initializeSharedEdits'....
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http://issues.apache.org/jira/browse/HDFS-3236
Author: Aaron T. Myers,
2012-12-05, 23:05
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[HDFS-2875] Clean up LeaseManager#changeLease - HDFS - [issue]
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...The code for LeaseManager#changeLease and the associated FSNamesystem#unprotectedChangeLease is very fragile, and can be improved in several ways....
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http://issues.apache.org/jira/browse/HDFS-2875
Author: Aaron T. Myers,
2012-11-29, 16:05
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Re: What is the reason that DataNode should configured the http and streamer port with a number under 1024 in secure mode? - HDFS - [mail # dev]
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...Hi Xiaohan, You're right that if a malicious user can get a fake DN to register with the NN then the low ports don't matter. However, in order for a user to get a malicious DN to regis...
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Author: Aaron T. Myers,
2012-11-16, 19:41
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[HDFS-3133] Add support for DFS upgrade with HA enabled - HDFS - [issue]
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...For the first implementation of HA NameNode, we punted on allowing DFS upgrade with HA enabled, which makes doing a DFS upgrade on an HA-enabled cluster quite cumbersome and error-prone. We ...
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http://issues.apache.org/jira/browse/HDFS-3133
Author: Aaron T. Myers,
2012-11-13, 23:10
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[HDFS-4158] FSDirectory#hasSnapshot will NPE when deleting an empty directory - HDFS - [issue]
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...The method attempts to iterate over the child list of the directory, but that list may be null and this isn't handled currently....
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http://issues.apache.org/jira/browse/HDFS-4158
Author: Aaron T. Myers,
2012-11-07, 19:43
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[HDFS-2946] HA: Put a cap on the number of completed edits files retained by the NN - HDFS - [issue]
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...HDFS-2794 added a minimum number of transactions to retain in edits files. Since many underlying file systems put a cap on the number of entries in a single directory, we should put a cap on...
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http://issues.apache.org/jira/browse/HDFS-2946
Author: Aaron T. Myers,
2012-10-17, 14:21
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