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https://issues.apache.org/jira/browse/MAPREDUCE-4203?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13397001#comment-13397001
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Bikas Saha commented on MAPREDUCE-4203:
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1) ProcessInfo.age initializes to 1. So newpInfo.age += oldpInfo.age does what
you say apart from allowing newpInfo to have a different age too.
2) In the real use case, setProcessPid() is called to set the pid. But there
are a bunch of gridmix/ tests that depend on the old behavior of snooping the
JVM_PID from the env var on the fly and I did not want to change all of them.
So I added this to keep the tests passing without change.
3) Forgot to add that. Will do. Thanks!
4) Thats strange because I can see that the values are not zero and in fact
similar to values shown in TaskManager. Will change to PrivateUsage anyways to
be safe.
5) Will do.
6) The main calling function will do that with the return code of this function.
> Create equivalent of ProcfsBasedProcessTree for Windows
> -------------------------------------------------------
>
> Key: MAPREDUCE-4203
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4203
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Reporter: Bikas Saha
> Assignee: Bikas Saha
> Attachments: MAPREDUCE-4203.branch-1-win.1.patch,
> MAPREDUCE-4203.branch-1-win.2.patch, MAPREDUCE-4203.patch, test.cpp
>
>
> ProcfsBasedProcessTree is used by the TaskTracker to get process information
> like memory and cpu usage. This information is used to manage resources etc.
> The current implementation is based on Linux procfs functionality and hence
> does not work on other platforms, specifically windows.
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