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https://issues.apache.org/jira/browse/HADOOP-18242?focusedWorklogId=786348&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-786348
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ASF GitHub Bot logged work on HADOOP-18242:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 30/Jun/22 04:47
Start Date: 30/Jun/22 04:47
Worklog Time Spent: 10m
Work Description: mehakmeet opened a new pull request, #4517:
URL: https://github.com/apache/hadoop/pull/4517
ABFS rename fails intermittently when the Storage-blob tracking
metadata is in an incomplete state. This surfaces as the error code
404 and an error message of "RenameDestinationParentPathNotFound"
To mitigate this issue, when a request fails with this response.
the ABFS client issues a HEAD call on the source file
and then retries the rename operation again
ABFS filesystem statistics track when this occurs with new counters
rename_recovery
metadata_incomplete_rename_failures
rename_path_attempts
This is very rare occurrence and appears to be triggered under certain
heavy load conditions, just as with HADOOP-18163.
Contributed by Mehakmeet Singh.
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### Description of PR
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### For code changes:
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(e.g. 'HADOOP-17799. Your PR title ...')?
- [ ] Object storage: have the integration tests been executed and the
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Issue Time Tracking
-------------------
Worklog Id: (was: 786348)
Time Spent: 5h 20m (was: 5h 10m)
> ABFS Rename Failure when tracking metadata is in incomplete state
> -----------------------------------------------------------------
>
> Key: HADOOP-18242
> URL: https://issues.apache.org/jira/browse/HADOOP-18242
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs/azure
> Reporter: Mehakmeet Singh
> Assignee: Mehakmeet Singh
> Priority: Major
> Labels: pull-request-available
> Time Spent: 5h 20m
> Remaining Estimate: 0h
>
> If a node in the datacenter crashes while processing an operation,
> occasionally it can leave the Storage-internal blob tracking metadata in an
> incomplete state. We expect this to happen occasionally, and so all API’s
> are designed in such a way that if this incomplete state is observed on a
> blob, the situation is resolved before the current operation proceeds.
> However, this incident has exposed a bug specifically with the Rename API,
> where the incomplete state fails to resolve, leading to this incorrect
> failure. As a temporary mitigation, if any other operation is performed on
> this blob – GetBlobProperties, GetBlob, GetFileProperties, SetFileProperties,
> etc – it should resolve the incomplete state, and rename will no longer hit
> this issue.
> StackTrace:
> {code:java}
> 2022-03-22 17:52:19,789 DEBUG [regionserver/euwukwlss-hg50:16020.logRoller]
> services.AbfsClient: HttpRequest:
> 404,RenameDestinationParentPathNotFound,cid=ef5cbf0f-5d4a-4630-8a59-3d559077fc24,rid=35fef164-101f-000b-1b15-3ed818000000,sent=0,recv=212,PUT,https://euwqdaotdfdls03.dfs.core.windows.net/eykbssc/apps/hbase/data/oldWALs/euwukwlss-hg50.tdf.qa%252C16020%252C1647949929877.1647967939315?timeout=90
> {code}
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