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https://issues.apache.org/jira/browse/HADOOP-18528?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17633892#comment-17633892
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ASF GitHub Bot commented on HADOOP-18528:
-----------------------------------------
mehakmeet opened a new pull request, #5134:
URL: https://github.com/apache/hadoop/pull/5134
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### Description of PR
Setting readAhead config to false by default.
### How was this patch tested?
Region: `us-west-2`
`mvn -Dparallel-tests=abfs -DtestsThreadCount=8 -Dscale clean verify`
Seeing some timeout errors, going to test the latest ABFS trunk code to see
the differences tomorrow.
### For code changes:
- [ ] Does the title or this PR starts with the corresponding JIRA issue id
(e.g. 'HADOOP-17799. Your PR title ...')?
- [ ] Object storage: have the integration tests been executed and the
endpoint declared according to the connector-specific documentation?
- [ ] If adding new dependencies to the code, are these dependencies
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`NOTICE-binary` files?
> ABFS: Disable readAhead/prefetching by default
> ----------------------------------------------
>
> Key: HADOOP-18528
> URL: https://issues.apache.org/jira/browse/HADOOP-18528
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs/azure
> Affects Versions: 3.3.4
> Reporter: Mehakmeet Singh
> Assignee: Mehakmeet Singh
> Priority: Major
>
> After the addition of HADOOP-18517, we should disable readAhead by default to
> mitigate inconsistent read results caused by ABFS prefetching, HADOOP-18521.
> As an urgent fix: Disable readAhead/prefetch, tracked for 3.3.5.
> Long-term fix: HADOOP-18521, tracked for 3.3.6.
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