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https://issues.apache.org/jira/browse/HADOOP-15566?focusedWorklogId=679229&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-679229
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ASF GitHub Bot logged work on HADOOP-15566:
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Author: ASF GitHub Bot
Created on: 09/Nov/21 18:12
Start Date: 09/Nov/21 18:12
Worklog Time Spent: 10m
Work Description: ndimiduk commented on pull request #3445:
URL: https://github.com/apache/hadoop/pull/3445#issuecomment-964407226
That's great progress, @ArkenKiran ! You got there before I could. On the
read path, any block cache miss will go to the hdfs client for a read (can
still be local via short-circuit read). On the write path, we should see hdfs
interaction via WAL writes and by MemStore flushes. WAL writes are inline with
the client activity, MemStore flushes happen in the background.
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Issue Time Tracking
-------------------
Worklog Id: (was: 679229)
Time Spent: 6h 50m (was: 6h 40m)
> Support OpenTelemetry
> ---------------------
>
> Key: HADOOP-15566
> URL: https://issues.apache.org/jira/browse/HADOOP-15566
> Project: Hadoop Common
> Issue Type: New Feature
> Components: metrics, tracing
> Affects Versions: 3.1.0
> Reporter: Todd Lipcon
> Assignee: Siyao Meng
> Priority: Major
> Labels: pull-request-available, security
> Attachments: HADOOP-15566-WIP.1.patch, HADOOP-15566.000.WIP.patch,
> OpenTelemetry Support Scope Doc v2.pdf, OpenTracing Support Scope Doc.pdf,
> Screen Shot 2018-06-29 at 11.59.16 AM.png, ss-trace-s3a.png
>
> Time Spent: 6h 50m
> Remaining Estimate: 0h
>
> The HTrace incubator project has voted to retire itself and won't be making
> further releases. The Hadoop project currently has various hooks with HTrace.
> It seems in some cases (eg HDFS-13702) these hooks have had measurable
> performance overhead. Given these two factors, I think we should consider
> removing the HTrace integration. If there is someone willing to do the work,
> replacing it with OpenTracing might be a better choice since there is an
> active community.
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