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[HADOOP-8537] Two TFile tests failing recently - Hadoop - [issue]
...TestTFileJClassComparatorByteArrays and TestTFileByteArrays are failing in some recent patch builds (seems to have started in the middle of May). These tests previously failed in HADOOP-7111...
http://issues.apache.org/jira/browse/HADOOP-8537    Author: Todd Lipcon, 2012-09-07, 22:08
[HADOOP-8770] NN should not RPC to self to find trash defaults (causes deadlock) - Hadoop - [issue]
...When transitioning a SBN to active, I ran into the following situation: the TrashPolicy first gets loaded by an IPC Server Handler thread. The initialize function then tries to make an RPC t...
http://issues.apache.org/jira/browse/HADOOP-8770    Author: Todd Lipcon, 2012-09-06, 14:40
[HADOOP-8624] ProtobufRpcEngine should log all RPCs if TRACE logging is enabled - Hadoop - [issue]
...Since all RPC requests/responses are now ProtoBufs, it's easy to add a TRACE level logging output for ProtobufRpcEngine that actually shows the full content of all calls. This is very handy ...
http://issues.apache.org/jira/browse/HADOOP-8624    Author: Todd Lipcon, 2012-09-05, 21:10
[expand - 2 more] - Re: Large feature development - Hadoop - [mail # general]
...On Mon, Sep 3, 2012 at 12:05 AM, Arun C Murthy  wrote:  I'm not sure I ignored what you wrote. I understand that Yahoo is deploying soon on one of their clusters. That's great news...
   Author: Todd Lipcon, 2012-09-03, 07:31
[expand - 1 more] - Re: Heads up: next hadoop-2 release - Hadoop - [mail # general]
...On Fri, Aug 31, 2012 at 1:15 PM, Eli Collins  wrote:   Seems doable to me. I'm in the "finishing touches" stages now, and feeling pretty confident about the basic protocol after a ...
   Author: Todd Lipcon, 2012-09-01, 07:52
[HADOOP-8757] Metrics should disallow names with invalid characters - Hadoop - [issue]
...Just spent a couple hours trying to figure out why a metric I added didn't show up in JMX, only to eventually realize it was because I had a whitespace in the property name. This didn't caus...
http://issues.apache.org/jira/browse/HADOOP-8757    Author: Todd Lipcon, 2012-09-01, 02:48
[expand - 6 more] - Re: [DISCUSS] Spin out MR, HDFS and YARN as their own TLPs and disband Hadoop umbrella project - Hadoop - [mail # general]
...On Fri, Aug 31, 2012 at 9:58 AM, Robert Evans  wrote:  I haven't been in the MR codebase much of late, so I'll defer to your judgment here: would it be feasible to have an abstract...
   Author: Todd Lipcon, 2012-08-31, 17:06
[HADOOP-7754] Expose file descriptors from Hadoop-wrapped local FileSystems - Hadoop - [issue]
...In HADOOP-7714, we determined that using fadvise inside of the MapReduce shuffle can yield very good performance improvements. But many parts of the shuffle are FileSystem-agnostic and thus ...
http://issues.apache.org/jira/browse/HADOOP-7754    Author: Todd Lipcon, 2012-08-16, 00:20
[HADOOP-7714] Umbrella for usage of native calls to manage OS cache and readahead - Hadoop - [issue]
...Especially in shared HBase/MR situations, management of the OS buffer cache is important. Currently, running a big MR job will evict all of HBase's hot data from cache, causing HBase perform...
http://issues.apache.org/jira/browse/HADOOP-7714    Author: Todd Lipcon, 2012-08-03, 10:19
[HADOOP-6133] ReflectionUtils performance regression - Hadoop - [issue]
...HADOOP-4187 introduced extra calls to Class.forName in ReflectionUtils.setConf. This caused a fairly large performance regression. Attached is a microbenchmark that shows the following timin...
http://issues.apache.org/jira/browse/HADOOP-6133    Author: Todd Lipcon, 2012-07-30, 14:37
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