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https://issues.apache.org/jira/browse/HADOOP-19221?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17864776#comment-17864776
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ASF GitHub Bot commented on HADOOP-19221:
-----------------------------------------
steveloughran opened a new pull request, #6938:
URL: https://github.com/apache/hadoop/pull/6938
Adds custom set of content providers in UploadContentProviders which
* restart on failures
* do not copy buffers/byte buffers into new private byte arrays, so avoid
exacerbating memory problems.
org.apache.hadoop.fs.store.ByteBufferInputStream has been pulled out of
org.apache.hadoop.fs.store.DataBlocks to assist.
CommitOperations has been wired up for this; S3ABlockOutputStream will
follow.
TODO
* Maybe collect statistics on restarts
* Improve handling of interrupted exceptions raised while waiting for block
uploads to complete when spark wants to abort a speculative task.
Change-Id: I8c5f73978e542147de76462206da5df1494b4912
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### Description of PR
### How was this patch tested?
Needs new tests. I cannot think of a realistic way to inject failure
conditions
into the SDK other than having a fault injecting HttpClient implementation
and
that would be complicated.
### 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
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?
> S3A: Unable to recover from failure of multipart block upload attempt
> ---------------------------------------------------------------------
>
> Key: HADOOP-19221
> URL: https://issues.apache.org/jira/browse/HADOOP-19221
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Affects Versions: 3.4.0
> Reporter: Steve Loughran
> Assignee: Steve Loughran
> Priority: Major
>
> If a multipart PUT request fails for some reason (e.g. networrk error) then
> all subsequent retry attempts fail with a 400 Response and ErrorCode
> RequestTimeout .
> {code}
> Your socket connection to the server was not read from or written to within
> the timeout period. Idle connections will be closed. (Service: Amazon S3;
> Status Code: 400; Error Code: RequestTimeout; Request ID:; S3 Extended
> Request ID:
> {code}
> The list of supporessed exceptions contains the root cause (the initial
> failure was a 500); all retries failed to upload properly from the source
> input stream {{RequestBody.fromInputStream(fileStream, size)}}.
> Hypothesis: the mark/reset stuff doesn't work for input streams. On the v1
> sdk we would build a multipart block upload request passing in (file, offset,
> length), the way we are now doing this doesn't recover.
> probably fixable by providing our own {{ContentStreamProvider}}
> implementations for
> # file + offset + length
> # bytebuffer
> # byte array
> The sdk does have explicit support for the memory ones, but they copy the
> data blocks first. we don't want that as it would double the memory
> requirements of active blocks.
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