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[MAPREDUCE-3289] Make use of fadvise in the NM's shuffle handler - MapReduce - [issue]
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...Using the new NativeIO fadvise functions, we can make the NodeManager prefetch map output before it's send over the socket, and drop it out of the fs cache once it's been sent (since it's ve...
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http://issues.apache.org/jira/browse/MAPREDUCE-3289
Author: Todd Lipcon,
2012-09-25, 17:28
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[MAPREDUCE-2704] CombineFileInputFormat only works when paths are on the default filesystem - MapReduce - [issue]
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...CombineFileInputFormat constructs new Path objects by converting an existing path to a URI, and then only pulling out the "path" part of it. This drops the scheme and host, which makes Combi...
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http://issues.apache.org/jira/browse/MAPREDUCE-2704
Author: Todd Lipcon,
2012-09-19, 20:28
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Re: HDFS dfs.client.read.shortcircuit.skip.checksum - MapReduce - [mail # user]
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...Hi LiuLei, Since you're using CDH3 (a 1.x derived distribution) you are using the old checksum implementations written in Java. In Hadoop 2.0 (or CDH4), we have JNI-based checksu...
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Author: Todd Lipcon,
2012-09-17, 21:36
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[MAPREDUCE-3992] Reduce fetcher doesn't verify HTTP status code of response - MapReduce - [issue]
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...Currently, the reduce fetch code doesn't check the HTTP status code of the response. This can lead to the following situation: the map output servlet gets an IOException after setting the he...
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http://issues.apache.org/jira/browse/MAPREDUCE-3992
Author: Todd Lipcon,
2012-09-12, 03:28
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[MAPREDUCE-3993] Graceful handling of codec errors during decompression - MapReduce - [issue]
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...When using a compression codec for intermediate compression, some cases of corrupt data can cause the codec to throw exceptions other than IOException (eg java.lang.InternalError). This will...
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http://issues.apache.org/jira/browse/MAPREDUCE-3993
Author: Todd Lipcon,
2012-09-07, 22:10
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[MAPREDUCE-2855] ResourceBundle lookup during counter name resolution takes a lot of time - MapReduce - [issue]
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...Loading a job status page in trunk takes a lot of time, and it seems like most of the time is spent resolving counter names. Looking through the JDK source, ResourceBundle.getBundle(String) ...
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http://issues.apache.org/jira/browse/MAPREDUCE-2855
Author: Todd Lipcon,
2012-08-19, 06:22
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[MAPREDUCE-2565] TestMRCLI still failing on trunk - MapReduce - [issue]
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...I imagine this is related to the recent shell commands. Here is an example failed test:https://builds.apache.org//job/PreCommit-MAPREDUCE-Build/344//testReport/org.apache.hadoop.cli/TestMRCL...
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http://issues.apache.org/jira/browse/MAPREDUCE-2565
Author: Todd Lipcon,
2012-07-10, 21:27
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[MAPREDUCE-2883] MR FI tests failing to build - MapReduce - [issue]
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...running ant mvn-install in hadoop-mapreduce-project on branch-0.23 fails in the fault injection compilation...
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http://issues.apache.org/jira/browse/MAPREDUCE-2883
Author: Todd Lipcon,
2012-07-10, 21:27
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[MAPREDUCE-1994] Linux task-controller determines its own path insecurely - MapReduce - [issue]
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...The task-controller uses argv[0] to determine its own path, and then calls stat() on that. Instead it should stat("/proc/self/exe") directly. This is important since argv[0] ...
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http://issues.apache.org/jira/browse/MAPREDUCE-1994
Author: Todd Lipcon,
2012-07-10, 21:27
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[MAPREDUCE-2242] LinuxTaskController doesn't properly escape environment variables - MapReduce - [issue]
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...LinuxTaskController currently just writes "export FOO=bar" pairs into taskjvm.sh, which fails if the value has multiple words or contains a space. This is causing TestDebugScriptWithLinuxTas...
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http://issues.apache.org/jira/browse/MAPREDUCE-2242
Author: Todd Lipcon,
2012-07-10, 21:27
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