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https://issues.apache.org/jira/browse/ACCUMULO-1197?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13614522#comment-13614522
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Eric Newton commented on ACCUMULO-1197:
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It would also be good if we merged any additional tracing effort with that done
for HBase.
> Pass Accumulo trace functionality through the DFSClient
> -------------------------------------------------------
>
> Key: ACCUMULO-1197
> URL: https://issues.apache.org/jira/browse/ACCUMULO-1197
> Project: Accumulo
> Issue Type: Improvement
> Components: trace
> Reporter: Josh Elser
> Assignee: Eric Newton
> Labels: gsoc2013, mentor
>
> The tracing functionality used by Accumulo provides nested regions of timing
> information for regular operations occurring inside of Accumulo, e.g. scans
> and compactions. There is basic functionality to view this information
> through the Accumulo monitor. This can be thought of as a distributed timing
> infrastructure for Accumulo which uses Accumulo to store its data.
> Currently, this tracing doesn't fall through into HDFS. It would be awesome
> to actually introspect through the DFSClient, all the way down to the
> datanode writing to local disk. A large portion of the task would be
> investigating ways to inject the ability for calling applications (Accumulo,
> in this case) to provide the trace client through the Hadoop datanode code
> and record the necessary timings
> Skills required would be a good understanding of Java. Some basic knowledge
> about Apache Hadoop would also be helpful.
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