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[HDFS-6295] Add "decommissioning" state and node state filtering to dfsadmin - HDFS - [issue]
...One of the few admin-friendly ways of viewing the list of decommissioning nodes is via "hdfs dfsadmin -report". However, this lists all the datanodes on the cluster, which is prohibitive for...
http://issues.apache.org/jira/browse/HDFS-6295    Author: Andrew Wang, 2014-05-05, 15:51
[HDFS-6333] REST API for fetching directory listing file from NN - HDFS - [issue]
...It'd be convenient if the NameNode supported fetching the directory listing via HTTP....
http://issues.apache.org/jira/browse/HDFS-6333    Author: Andrew Wang, 2014-05-03, 01:30
Nightly Jenkins build set up for HDFS-2006 branch - HDFS - [mail # dev]
...Hi all,I copied the trunk nightly build and adapted it to build the HDFS-2006branch. The test build I just kicked off seems to be working, but apologiesif it ends up spamming the dev list.Fe...
   Author: Andrew Wang, 2014-05-01, 20:31
Re: Policy on adding timeouts to tests - HDFS - [mail # dev]
...The timeouts are nice when trying to debug test failures on Jenkins,because otherwise you just see something like this:Caused by: java.lang.RuntimeException: The forked VM terminated without...
   Author: Andrew Wang, 2014-04-16, 18:44
[HDFS-4816] transitionToActive blocks if the SBN is doing checkpoint image transfer - HDFS - [issue]
...The NN and SBN do this dance during checkpoint image transfer with nested HTTP GETs via HttpURLConnection. When an admin does a -transitionToActive during this transfer, part of that is inte...
http://issues.apache.org/jira/browse/HDFS-4816    Author: Andrew Wang, 2014-04-14, 20:01
[HDFS-5591] Checkpointing should use monotonic time when calculating period - HDFS - [issue]
...Both StandbyCheckpointer and SecondaryNameNode use Time.now rather than Time.monotonicNow to calculate how long it's been since the last checkpoint. This can lead to issues when the system t...
http://issues.apache.org/jira/browse/HDFS-5591    Author: Andrew Wang, 2014-04-02, 14:32
[HDFS-5988] Bad fsimage always generated after upgrade - HDFS - [issue]
...Internal testing revealed an issue where, after upgrading from an earlier release, we always fail to save a correct PB-based fsimage (namely, missing inodes leading to an inconsistent namesp...
http://issues.apache.org/jira/browse/HDFS-5988    Author: Andrew Wang, 2014-03-25, 20:48
[HDFS-6151] HDFS should refuse to cache blocks >=2GB - HDFS - [issue]
...If you try to cache a block that's >=2GB, the DN will silently fail to cache it since MappedByteBuffer uses a signed int to represent size. Blocks this large are rare, but we should log o...
http://issues.apache.org/jira/browse/HDFS-6151    Author: Andrew Wang, 2014-03-24, 20:46
[HDFS-6093] Expose more caching information for debugging by users - HDFS - [issue]
...When users submit a new cache directive, it's unclear if the NN has recognized it and is actively trying to cache it, or if it's hung for some other reason. It'd be nice to expose a "pending...
http://issues.apache.org/jira/browse/HDFS-6093    Author: Andrew Wang, 2014-03-20, 21:25
[HDFS-6068] Disallow snapshot names that are also invalid directory names - HDFS - [issue]
...There are a number of restrictions on valid names in HDFS. For example, you can't name a directory "." or "..", or something containing a ":".However, I can happily create a snapshot named "...
http://issues.apache.org/jira/browse/HDFS-6068    Author: Andrew Wang, 2014-03-19, 14:59
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