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Re: How to understand Hadoop source code ? - Hadoop - [mail # dev]
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...Is there a specific bug fix or feature that you are trying to contribute? Specific questions like "how can I help with jira X?" or "what is the main entry point when I run the hdfs com...
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Author: Chris Nauroth,
2013-04-18, 17:14
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Re: [VOTE] Release Apache Hadoop 2.0.4-alpha - Hadoop - [mail # dev]
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...+1 (non-binding) - downloaded binary tarball - verified signatures and checksums - deployed to 3 Ubuntu VMs: 1xNN, 1xRM, 2xDN, 2xNM, 1x2NN - tested multiple HDFS operations - ran wordc...
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Author: Chris Nauroth,
2013-04-17, 16:52
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Re: [VOTE] Release Apache Hadoop 0.23.7 - Hadoop - [mail # dev]
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...+1 (non-binding) - downloaded binary tarball - verified signatures and checksums - deployed to 3 Ubuntu VMs: 1xNN, 1xRM, 2xDN, 2xNM, 1x2NN - tested multiple HDFS operations - ran wordc...
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Author: Chris Nauroth,
2013-04-17, 16:32
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Re: How to run hadoop jar command in a clustered environment - Hadoop - [mail # dev]
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...Hello Thoihen, I'm moving this discussion from common-dev (questions about developing Hadoop) to user (questions about using Hadoop). If you haven't already seen it, then I recom...
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Author: Chris Nauroth,
2013-04-15, 17:32
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Re: Maven build YARN ResourceManager only - Hadoop - [mail # user]
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...I don't have an answer to your exact question, but I do have a different suggestion that prevents the need to do frequent rebuilds of the whole Hadoop source tree. First, do a full bui...
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Author: Chris Nauroth,
2013-04-13, 04:41
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Re: Which java code(file) generates the heartbeat from the datanode and which code(file) listen that heartbeat on the namenode? - Hadoop - [mail # dev]
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...No problem. Glad to help. :-) In the last email, I mentioned the sendHeartbeat method in NameNodeRpcServer.java. This is the method that handles receiving a heartbeat...
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Author: Chris Nauroth,
2013-04-12, 21:17
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Re: Which java code(file) generates the heartbeat from the datanode and which code(file) listen that heartbeat on the namenode? - Hadoop - [mail # dev]
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...Hello Mohammad, Which version of the codebase? If it's trunk or branch-2, then for the datanode side, I recommend starting from hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/...
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Author: Chris Nauroth,
2013-04-11, 18:55
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[HADOOP-9437] TestNativeIO#testRenameTo fails on Windows due to assumption that POSIX errno is embedded in NativeIOException - Hadoop - [issue]
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...HDFS-4428 added a detailed error message for failures to rename files by embedding the POSIX errno in the NativeIOException. On Windows, the mapping of errno is not performed, so the e...
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http://issues.apache.org/jira/browse/HADOOP-9437
Author: Chris Nauroth,
2013-04-10, 15:06
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[HADOOP-9312] JniBasedUnixGroupsMapping#getGroupForUser can potentially leak memory - Hadoop - [issue]
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...This method lazily initializes a static variable to contain an empty array of groups. If multiple threads call the method before the variable has been initialized, then there is potent...
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http://issues.apache.org/jira/browse/HADOOP-9312
Author: Chris Nauroth,
2013-03-28, 16:21
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[HADOOP-8973] DiskChecker cannot reliably detect an inaccessible disk on Windows with NTFS ACLs - Hadoop - [issue]
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...DiskChecker.checkDir uses File.canRead, File.canWrite, and File.canExecute to check if a directory is inaccessible. These APIs are not reliable on Windows with NTFS ACLs due to a known...
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http://issues.apache.org/jira/browse/HADOOP-8973
Author: Chris Nauroth,
2013-03-27, 17:38
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