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https://issues.apache.org/jira/browse/HADOOP-18830?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17771219#comment-17771219
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ASF GitHub Bot commented on HADOOP-18830:
-----------------------------------------
steveloughran opened a new pull request, #6144:
URL: https://github.com/apache/hadoop/pull/6144
Cut out S3 Select
* leave public/unstable constants alone
* s3guard tool will fail with error
* s3afs. path capability will fail
* openFile() will fail with specific error
* s3 select doc updated
Everything else cut, including tests.
New (WiP) test: ITestSelectUnsupported
verifies new failure handling above
TODO
* finish tests once my laptop runs maven again (!)
* maybe remove eventstream, update maven and license
* update sdkv2 docs (and look for s3 select elsewhere"
### How was this patch tested?
maven and intellij both failing; will try tomorrow
### For code changes:
- [X] 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
licensed in a way that is compatible for inclusion under [ASF
2.0](http://www.apache.org/legal/resolved.html#category-a)?
- [ ] If applicable, have you updated the `LICENSE`, `LICENSE-binary`,
`NOTICE-binary` files?
> Cut S3 Select
> -------------
>
> Key: HADOOP-18830
> URL: https://issues.apache.org/jira/browse/HADOOP-18830
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Affects Versions: 3.4.0
> Reporter: Steve Loughran
> Assignee: Steve Loughran
> Priority: Major
>
> getting s3 select to work with the v2 sdk is tricky, we need to add extra
> libraries to the classpath beyond just bundle.jar. we can do this but
> * AFAIK nobody has ever done CSV predicate pushdown, as it breaks split logic
> completely
> * CSV is a bad format
> * one-line JSON more structured but also way less efficient
> ORC/Parquet benefit from vectored IO and work spanning the cluster.
> accordingly, I'm wondering what to do about s3 select
> # cut?
> # downgrade to optional and document the extra classes on the classpath
> Option #2 is straightforward and effectively the default. we can also declare
> the feature deprecated.
> {code}
> [ERROR]
> testReadLandsatRecordsNoMatch(org.apache.hadoop.fs.s3a.select.ITestS3SelectLandsat)
> Time elapsed: 147.958 s <<< ERROR!
> java.io.IOException: java.lang.NoClassDefFoundError:
> software/amazon/eventstream/MessageDecoder
> at
> org.apache.hadoop.fs.s3a.select.SelectObjectContentHelper.select(SelectObjectContentHelper.java:75)
> at
> org.apache.hadoop.fs.s3a.WriteOperationHelper.lambda$select$10(WriteOperationHelper.java:660)
> at
> org.apache.hadoop.fs.store.audit.AuditingFunctions.lambda$withinAuditSpan$0(AuditingFunctions.java:62)
> at org.apache.hadoop.fs.s3a.Invoker.once(Invoker.java:122)
> {code}
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