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[HDFS-2554] Add separate metrics for missing blocks with desired replication level 1 - HDFS - [issue]
...Some users use replication level set to 1 for datasets which are unimportant and can be lost with no worry (eg the output of terasort tests). But other data on the cluster is important and s...
http://issues.apache.org/jira/browse/HDFS-2554    Author: Todd Lipcon, 2015-07-09, 20:19
[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, 2015-06-15, 07:48
[HDFS-2994] If lease soft limit is recovered successfully the append can fail - HDFS - [issue]
...I saw the following logs on my test cluster:2012-02-22 14:35:22,887 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: startFile: recover lease [Lease.  Holder: DFSClient_attempt...
http://issues.apache.org/jira/browse/HDFS-2994    Author: Todd Lipcon, 2015-06-04, 17:55
[HDFS-2560] Refactor BPOfferService to be a static inner class - HDFS - [issue]
...Currently BPOfferService is a non-static inner class of DataNode. For HA we are adding another inner class inside of this, which makes the scope very hard to understand when reading the code...
http://issues.apache.org/jira/browse/HDFS-2560    Author: Todd Lipcon, 2015-05-27, 17:47
[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-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
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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