[HDFS-11363] Need more diagnosis info when seeing Slow waitForAckedSeqno - ASF JIRA

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Details

Type: Bug
Status: Resolved
Priority: Major
Resolution: Fixed
Affects Version/s: None
Fix Version/s: 2.9.0, 3.0.0-alpha4
Component/s: None
Labels:
- supportability

Target Version/s:

2.9.0
Hadoop Flags:

Reviewed

Description

When client writes a file, it may get the following message when ACK doesn't get back in a timely manner:

WARN hdfs.DFSClient: Slow waitForAckedSeqno took 39264ms (threshold=30000ms)

It would be nice to tell what file it's writing, and what DataNodes are in the pipeline, together with this message, to facilitate investigating related performance issue.

Attachments

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HDFS-11363.01.patch
25/Jan/17 02:24
1.0 kB
Xiao Chen
HDFS-11363.02.patch
02/Feb/17 00:42
1.0 kB
Xiao Chen
HDFS-11363.03.patch
02/Feb/17 17:34
1.0 kB
Xiao Chen

Issue Links

relates to

HDFS-8660 Slow write to packet mirror should log which mirror and which block

Resolved

Activity

People

Assignee:: Xiao Chen

Reporter:: Yongjun Zhang

Votes:: 0 Vote for this issue

Watchers:: 6 Start watching this issue

Dates

Created:: 23/Jan/17 22:40

Updated:: 18/Jul/18 22:49

Resolved:: 02/Feb/17 18:10