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Re: Datanode registration, port number - Hadoop - [mail # dev]
...Hi Dhaivat,  I did a good chunk of the design and implementation of HDFS-4949, so if you could post a longer writeup of your envisioned use cases and implementation, I'd definitely be i...
   Author: Andrew Wang, 2013-12-30, 20:48
Re: Regarding moving specific blocks of data in HDFS - Hadoop - [mail # dev]
...Hi Karthiek,  I haven't checked 1.0.4, but in 2.2.0 and onwards, there's this setting you can tweak up:  dfs.datanode.balance.bandwidthPerSec  By default, it's set to just 1MB...
   Author: Andrew Wang, 2013-12-18, 23:23
Re: [VOTE] Merge HDFS-2832 Heterogeneous Storage Phase 1 to trunk - Hadoop - [mail # dev]
...Thanks for clarifying that Arpit. I'm a +0.9 since I haven't reviewed enough to +1, but everything thus far looks great.  Andrew   On Fri, Dec 6, 2013 at 5:35 PM, Chen He  wro...
[+ more]    Author: Andrew Wang, 2013-12-09, 18:51
[HADOOP-10120] Additional sliding window metrics - Hadoop - [issue]
...For HDFS-5350 we'd like to report the last few fsimage transfer times as a health metric. This would mean (for example) a sliding window of the last 10 transfer times, when it was last updat...
http://issues.apache.org/jira/browse/HADOOP-10120    Author: Andrew Wang, 2013-11-21, 19:14
Re: Hadoop in Fedora updated to 2.2.0 - Hadoop - [mail # dev]
...I'm in agreement with Steve on this one. We're aware that Java 6 is EOL, but we can't drop support for the lifetime of the 2.x line since it's a (very) incompatible change. AFAIK a 3.x relea...
   Author: Andrew Wang, 2013-10-31, 21:51
Re: [VOTE] Merge HDFS-4949 to trunk - Hadoop - [mail # dev]
...Hey Chris,  Right now we're on track to have all of those things done by tomorrow. Since the remaining issues are either not technical or do not involve major changes, I was hoping we c...
[+ more]    Author: Andrew Wang, 2013-10-23, 21:18
Re: Managing docs with hadoop-1 & hadoop-2 - Hadoop - [mail # dev]
...Hey folks,  I've been seeing some reports about search results for Hadoop being broken because stable now points to the v2 docs, where a lot of stuff has moved around.  e.g.  ...
   Author: Andrew Wang, 2013-10-23, 18:09
Re: symlink support in Hadoop 2 GA - Hadoop - [mail # dev]
...Colin posted a summary of our phone call yesterday (attendees: myself, Colin, Daryn, Nathan, Jason, Chris, Suresh, Sanjay) on HADOOP-9984:  https://issues.apache.org/jira/browse/HADOOP-...
[+ more]    Author: Andrew Wang, 2013-10-04, 17:58
Re: 2.1.2 (Was: Re: [VOTE] Release Apache Hadoop 2.1.1-beta) - Hadoop - [mail # dev]
...If we're serious about not breaking compatibility after GA, then we need to slow down and make sure we get these new APIs right, or can add them in a compatible fashion.  HADOOP-9984 en...
[+ more]    Author: Andrew Wang, 2013-10-03, 01:01
[HADOOP-8541] Better high-percentile latency metrics - Hadoop - [issue]
...Based on discussion in HBASE-6261 and with some HDFS devs, I'd like to make better high-percentile latency metrics a part of hadoop-common.I've already got a working implementation of [1...
http://issues.apache.org/jira/browse/HADOOP-8541    Author: Andrew Wang, 2013-10-02, 19:03
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