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[HDFS-5223] Allow edit log/fsimage format changes without changing layout version - HDFS - [issue]
...Currently all HDFS on-disk formats are version by the single layout version. This means that even for changes which might be backward compatible, like the addition of a new edit log op code,...
http://issues.apache.org/jira/browse/HDFS-5223    Author: Aaron T. Myers, 2015-04-10, 07:05
[HDFS-2350] Secure DN doesn't print output to console when started interactively - HDFS - [issue]
...If one starts a secure DN (using jsvc) interactively, the output is not printed to the console, but instead ends up in $HADOOP_LOG_DIR/jsvc.err and $HADOOP_LOG_DIR/jsvc.out....
http://issues.apache.org/jira/browse/HDFS-2350    Author: Aaron T. Myers, 2015-03-16, 19:49
[HDFS-3745] fsck prints that it's using KSSL even when it's in fact using SPNEGO for authentication - HDFS - [issue]
...In branch-2 (which exclusively uses SPNEGO for HTTP authentication) and in branch-1 (which can optionally use SPNEGO for HTTP authentication), running fsck will print the following, which is...
http://issues.apache.org/jira/browse/HDFS-3745    Author: Aaron T. Myers, 2015-03-16, 16:40
[HDFS-3349] DFSAdmin fetchImage command should initialize security credentials - HDFS - [issue]
...The `hdfs dfsadmin -fetchImage' command should fetch the fsimage using the appropriate credentials if security is enabled....
http://issues.apache.org/jira/browse/HDFS-3349    Author: Aaron T. Myers, 2015-03-16, 16:27
[HDFS-2875] Clean up LeaseManager#changeLease - HDFS - [issue]
...The code for LeaseManager#changeLease and the associated FSNamesystem#unprotectedChangeLease is very fragile, and can be improved in several ways....
http://issues.apache.org/jira/browse/HDFS-2875    Author: Aaron T. Myers, 2015-03-10, 04:36
[HDFS-2782] HA: Support multiple shared edits dirs - HDFS - [issue]
...Supporting multiple shared dirs will improve availability (eg see HDFS-2769). You may want to use multiple shared dirs on a single filer (eg for better fault isolation) or because you want t...
http://issues.apache.org/jira/browse/HDFS-2782    Author: Aaron T. Myers, 2015-03-10, 04:36
Re: Looking to a Hadoop 3 release - HDFS - [mail # dev]
...+1, this sounds like a good plan to me.Thanks a lot for volunteering to take this on, Andrew.Best,AaronOn Mon, Mar 2, 2015 at 3:19 PM, Andrew Wang wrote: ...
   Author: Aaron T. Myers, 2015-03-02, 23:32
[HDFS-2306] NameNode web UI should show information about recent checkpoints - HDFS - [issue]
...It would be nice if the NN web UI showed the 2NN address, timestamp, number of edits, etc. of the last few checkpoints....
http://issues.apache.org/jira/browse/HDFS-2306    Author: Aaron T. Myers, 2015-03-01, 08:04
[HDFS-2045] HADOOP_*_HOME environment variables no longer work for tar ball distributions - HDFS - [issue]
...It used to be that you could do the following: Run `ant bin-package' in your hadoop-common checkout. Set HADOOP_COMMON_HOME to the built directory of hadoop-common. Run `ant bin-package' in ...
http://issues.apache.org/jira/browse/HDFS-2045    Author: Aaron T. Myers, 2015-02-08, 18:25
[HDFS-7421] Move processing of postponed over-replicated blocks to a background task - HDFS - [issue]
...In an HA environment, we postpone sending block invalidates to DNs until all DNs holding a given block have done at least one block report to the NN after it became active. When that first b...
http://issues.apache.org/jira/browse/HDFS-7421    Author: Aaron T. Myers, 2015-01-23, 19:35
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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