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[HDFS-5037] Active NN should trigger its own edit log rolls - HDFS - [issue]
...We've seen cases where the SBN/2NN went down, and then users accumulated very very large edit log segments. This causes a slow startup time because the last edit log segment must be read ful...
http://issues.apache.org/jira/browse/HDFS-5037    Author: Todd Lipcon , 2016-05-12, 18:17
[HDFS-3341] Change minimum RPC versions to 2.0.0-SNAPSHOT instead of 2.0.0 - HDFS - [issue]
...After we commit HADOOP-8340, tests will fail because the minimum version is configured to be 2.0.0/3.0.0 instead of the corresponding SNAPSHOT builds. When we commit HADOOP-8340, we should u...
http://issues.apache.org/jira/browse/HDFS-3341    Author: Todd Lipcon , 2016-05-12, 18:16
[HDFS-4298] StorageRetentionManager spews warnings when used with QJM - HDFS - [issue]
...When the NN is configured with a QJM, we see the following warning message every time a checkpoint is made or uploaded:12/12/10 16:07:52 WARN namenode.FSEditLog: Unable to determine input st...
http://issues.apache.org/jira/browse/HDFS-4298    Author: Todd Lipcon , 2016-05-12, 18:16
[HDFS-5074] Allow starting up from an fsimage checkpoint in the middle of a segment - HDFS - [issue]
...We've seen the following behavior a couple times: SBN is running and somehow encounters an error in the middle of replaying an edit log in the tailer (eg the JN it's reading from crashes) SB...
http://issues.apache.org/jira/browse/HDFS-5074    Author: Todd Lipcon , 2016-05-12, 18:16
[HDFS-3962] NN should periodically check writability of 'required' journals - HDFS - [issue]
...Currently, our HA design ensures "write fencing" by having the failover controller call a fencing script before transitioning a new node to active. However, if the fencing script is based on...
http://issues.apache.org/jira/browse/HDFS-3962    Author: Todd Lipcon , 2016-05-12, 18:16
[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 , 2016-05-12, 18:15
[HDFS-4643] Fix flakiness in TestQuorumJournalManager - HDFS - [issue]
...TestQuorumJournalManager can occasionally fail if two consecutive test cases pick the same port number for the JournalNodes. In this case, sometimes an IPC client can be cached from a previo...
http://issues.apache.org/jira/browse/HDFS-4643    Author: Todd Lipcon , 2016-05-12, 18:15
[HDFS-3644] OEV should recognize and deal with 0.20.20x opcode versions - HDFS - [issue]
...We have some opcode conflicts for edit logs between 0.20.20x (LV -19, -31) vs newer versions. For edit log loading, we dealt with this by forcing users to save namespace on an earlier versio...
http://issues.apache.org/jira/browse/HDFS-3644    Author: Todd Lipcon , 2016-05-12, 18:15
[HDFS-3573] Supply NamespaceInfo when instantiating JournalManagers - HDFS - [issue]
...Currently, the JournalManagers are instantiated before the NamespaceInfo is loaded from local storage directories. This is problematic since the JM may want to verify that the storage info a...
http://issues.apache.org/jira/browse/HDFS-3573    Author: Todd Lipcon , 2016-05-12, 18:14
[HDFS-3574] Fix small race and do some cleanup in GetImageServlet - HDFS - [issue]
...There's a very small race window in GetImageServlet, if the following interleaving occurs: The Storage object returns some local file in the storage directory (eg an edits file or image file...
http://issues.apache.org/jira/browse/HDFS-3574    Author: Todd Lipcon , 2016-05-12, 18:14