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[HDFS-5403] WebHdfs client cannot communicate with older WebHdfs servers post HDFS-5306 - HDFS - [issue]
...HDFS-5306 introduced the field infoSecurePort to the DatanodeIDProto PB definition and made it optional for compatibility purposes. However, we don't correctly the handle the case when this ...
http://issues.apache.org/jira/browse/HDFS-5403    Author: Aaron T. Myers, 2013-11-01, 21:59
[HDFS-5433] When reloading fsimage during checkpointing, we should clear existing snapshottable directories - HDFS - [issue]
...The complete set of snapshottable directories are referenced both via the file system tree and in the SnapshotManager class. It's possible that when the 2NN performs a checkpoint, it will re...
http://issues.apache.org/jira/browse/HDFS-5433    Author: Aaron T. Myers, 2013-10-31, 15:20
[HDFS-4657] Limit the number of blocks logged by the NN after a block report to a configurable value. - HDFS - [issue]
...If incremental BR is received before first full BR NN will log a line for every block on a DN.This can impact restart times pretty substantially if the DNs have a lot of blocks, and since th...
http://issues.apache.org/jira/browse/HDFS-4657    Author: Aaron T. Myers, 2013-10-30, 13:03
[HDFS-5408] Optional fields in PB definitions should be optional in HTTP deserialization as well - HDFS - [issue]
...As was pointed out by Andrew Wang in HDFS-5403, there are a few fields which are marked as optional in PB definitions but then assumed to always exist in the JSON deserialization of the WebH...
http://issues.apache.org/jira/browse/HDFS-5408    Author: Aaron T. Myers, 2013-10-25, 02:57
[HDFS-5289] Race condition in TestRetryCacheWithHA#testCreateSymlink causes spurious test failure - HDFS - [issue]
...The code to check if the operation has been completed on the active NN can potentially execute before the thread actually doing the operation has run. In this case the checking code will ret...
http://issues.apache.org/jira/browse/HDFS-5289    Author: Aaron T. Myers, 2013-10-03, 15:00
[HDFS-3133] Add support for DFS upgrade with HA enabled - HDFS - [issue]
...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 ...
http://issues.apache.org/jira/browse/HDFS-3133    Author: Aaron T. Myers, 2013-10-02, 23:14
[HDFS-5159] Secondary NameNode fails to checkpoint if error occurs downloading edits on first checkpoint - HDFS - [issue]
...The 2NN will avoid downloading/loading a new fsimage if its local copy of fsimage is the same as the version on the NN. However, the decision to load the fsimage from disk into memory is bas...
http://issues.apache.org/jira/browse/HDFS-5159    Author: Aaron T. Myers, 2013-09-25, 00:33
[HDFS-5102] Snapshot names should not be allowed to contain slash characters - HDFS - [issue]
...Snapshots of a snapshottable directory are allowed to have arbitrary names. Presently, if you create a snapshot with a snapshot name that begins with a "/" character, this will be allowed, b...
http://issues.apache.org/jira/browse/HDFS-5102    Author: Aaron T. Myers, 2013-09-25, 00:33
[HDFS-2952] HA: NN should not start with upgrade option or with a pending an unfinalized upgrade - HDFS - [issue]
...For simplicity, we should require that upgrades be done with HA disabled. We might support this in future versions....
http://issues.apache.org/jira/browse/HDFS-2952    Author: Aaron T. Myers, 2013-08-27, 23:46
[HDFS-4906] HDFS Output streams should not accept writes after being closed - HDFS - [issue]
...Currently if one closes an OutputStream obtained from FileSystem#create and then calls write(...) on that closed stream, the write will appear to succeed without error though no data will be...
http://issues.apache.org/jira/browse/HDFS-4906    Author: Aaron T. Myers, 2013-08-27, 23:08
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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