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[HDFS-3755] Creating an already-open-for-write file with overwrite=true fails - HDFS - [issue]
...If a file is already open for write by one client, and another client calls fs.create() with overwrite=true, the file should be deleted and the new file successfully created. Instead, it is ...
http://issues.apache.org/jira/browse/HDFS-3755    Author: Todd Lipcon, 2015-05-08, 07:39
[HDFS-3862] QJM: don't require a fencer to be configured if shared storage has built-in single-writer semantics - HDFS - [issue]
...Currently, NN HA requires that the administrator configure a fencing method to ensure that only a single NameNode may write to the shared storage at a time. Some shared edits storage impleme...
http://issues.apache.org/jira/browse/HDFS-3862    Author: Todd Lipcon, 2015-05-04, 02:13
[HDFS-5058] QJM should validate startLogSegment() more strictly - HDFS - [issue]
...We've seen a small handful of times a case where one of the NNs in an HA cluster ends up with an fsimage checkpoint that falls in the middle of an edit segment. We're not sure yet how this h...
http://issues.apache.org/jira/browse/HDFS-5058    Author: Todd Lipcon, 2015-05-02, 21:36
[HDFS-4176] EditLogTailer should call rollEdits with a timeout - HDFS - [issue]
...When the EditLogTailer thread calls rollEdits() on the active NN via RPC, it currently does so without a timeout. So, if the active NN has frozen (but not actually crashed), this call can ha...
http://issues.apache.org/jira/browse/HDFS-4176    Author: Todd Lipcon, 2015-05-01, 00:27
[HDFS-2009] test-patch comment doesn't show names of failed FI tests - HDFS - [issue]
...Looks like test-patch.sh only looks at the build/test/*xml test results, but it should also look at build-fi/test/*xml I think...
http://issues.apache.org/jira/browse/HDFS-2009    Author: Todd Lipcon, 2015-04-26, 01:53
[HDFS-2686] Remove DistributedUpgrade related code - HDFS - [issue]
...A distributed upgrade framework was introduced long ago in HADOOP-1286 but was only used twice throughout history, and not since 0.17, where it was considered buggy (see HADOOP-3677). This i...
http://issues.apache.org/jira/browse/HDFS-2686    Author: Todd Lipcon, 2015-04-22, 14:15
[HDFS-3918] EditLogTailer shouldn't log WARN when other node is in standby mode - HDFS - [issue]
...If both nodes are in standby mode, each will be trying to roll the others' logs, which results in errors like:Unable to trigger a roll of the active NN org.apache.hadoop.ipc.StandbyException...
http://issues.apache.org/jira/browse/HDFS-3918    Author: Todd Lipcon, 2015-03-31, 15:46
[HDFS-4638] TransferFsImage should take Configuration as parameter - HDFS - [issue]
...TransferFsImage currently creates a new HdfsConfiguration object, rather than taking one passed in. This means that using dfsadmin -fetchImage, you can't pass a different timeout on the comm...
http://issues.apache.org/jira/browse/HDFS-4638    Author: Todd Lipcon, 2015-03-22, 22:40
[HDFS-2771] Move Federation and WebHDFS documentation into HDFS project - HDFS - [issue]
...For some strange reason, the WebHDFS and Federation documentation is currently in the hadoop-yarn site. This is counter-intuitive. We should move these documents to an hdfs site, or if we th...
http://issues.apache.org/jira/browse/HDFS-2771    Author: Todd Lipcon, 2015-03-16, 20:06
[HDFS-3280] DFSOutputStream.sync should not be synchronized - HDFS - [issue]
...HDFS-895 added an optimization to make hflush() much faster by unsynchronizing it. But, we forgot to un-synchronize the deprecated sync() wrapper method. This makes the HBase WAL really slow...
http://issues.apache.org/jira/browse/HDFS-3280    Author: Todd Lipcon, 2015-03-16, 19:57
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB