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[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
[HDFS-4592] Default values for access time precision are out of sync between hdfs-default.xml and the code - HDFS - [issue]
...In hdfs-default.xml we have:<property>  <name>dfs.namenode.accesstime.precision</name>  <value>3600000</value>  <description>...
http://issues.apache.org/jira/browse/HDFS-4592    Author: Aaron T. Myers, 2013-08-27, 23:08
[HDFS-4747] Convert snapshot user guide to APT from XDOC - HDFS - [issue]
...To be consistent with the rest of the HDFS docs, the snapshots user guide should use APT instead of XDOC....
http://issues.apache.org/jira/browse/HDFS-4747    Author: Aaron T. Myers, 2013-08-06, 07:28
[HDFS-3404] Make putImage in GetImageServlet infer remote address to fetch from request - HDFS - [issue]
...As it stands, daemons which perform checkpointing must determine their own address on which they can be reached, so that the NN which they checkpoint against knows what address to fetch a me...
http://issues.apache.org/jira/browse/HDFS-3404    Author: Aaron T. Myers, 2013-08-06, 02:51
[HDFS-5060] NN should proactively perform a saveNamespace if it has a huge number of outstanding uncheckpointed transactions - HDFS - [issue]
...In a properly-functioning HDFS system, checkpoints will be triggered either by the secondary NN or standby NN regularly, by default every hour or 1MM outstanding edits transactions, whicheve...
http://issues.apache.org/jira/browse/HDFS-5060    Author: Aaron T. Myers, 2013-08-05, 18:35
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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