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https://issues.apache.org/jira/browse/HADOOP-9281?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ivan A. Veselovsky updated HADOOP-9281:
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Attachment: HADOOP-9281-trunk--N6--MAPREDUCE-part.patch
HADOOP-9281-trunk--N6--HADOOP-COMMON-part.patch
Hi, Daryn,
please see xxx--N6--yyy patches (apply to both trunk & branch2).
1) I removed "unnecessary" changes from the patch. Some "unnecessary" changes
were initially done to compensate pre-commit audit warnings (mostly
deprecations, since the patch deprecates old MetricsServelet), so now the patch
may have problems with the number of warnings.
2) I splitted the patch into 2 pieces (hadoop-common and mr part). Yarn part is
"unnecessary".
3) ServletSink.numInstances was not thread safe, right. It was so , because
creation of several Servlet instances is quite rare case, though, this is
possible in theory. I fixed the thread-safety issue.
> Rework all usages of o.a.h.metrics to o.a.h.metrics2 new metrics API
> --------------------------------------------------------------------
>
> Key: HADOOP-9281
> URL: https://issues.apache.org/jira/browse/HADOOP-9281
> Project: Hadoop Common
> Issue Type: Improvement
> Affects Versions: 3.0.0, 2.0.3-alpha, 0.23.7
> Reporter: Ivan A. Veselovsky
> Assignee: Ivan A. Veselovsky
> Attachments: HADOOP-9281-branch-0.23--N5.patch,
> HADOOP-9281-trunk--N5.patch, HADOOP-9281-trunk--N6--HADOOP-COMMON-part.patch,
> HADOOP-9281-trunk--N6--MAPREDUCE-part.patch, HADOOP-9281-trunk--N6.patch
>
>
> The following done:
> 1) o.a.h.metrics.MetricsServlet reworked to o.a.h.metrics2.lib.MetricsServlet2
> 2) class org.apache.hadoop.mapreduce.task.reduce.ShuffleClientMetrics
> rewritten to use metrics2 API.
> 3) class org.apache.hadoop.mapred.LocalJobRunnerMetrics rewritten to use new
> metrics2 API.
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