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https://issues.apache.org/jira/browse/HADOOP-13205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16153347#comment-16153347
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Steve Loughran commented on HADOOP-13205:
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+ SocketTimeoutException and ConnectTimeoutException (both subclasses of
InterruptedIOException) to be handled explicitly
> S3A to support custom retry policies; maybe failfast on unknown host
> --------------------------------------------------------------------
>
> Key: HADOOP-13205
> URL: https://issues.apache.org/jira/browse/HADOOP-13205
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Affects Versions: 2.8.0
> Reporter: Steve Loughran
> Assignee: Steve Loughran
>
> Noticed today that when connections are down, S3A retries on
> UnknownHostExceptions logging noisily in the process.
> # it should be possible to define or customize retry policies for an FS
> instance (fail fast, exponential backoff, etc)
> # we may want to explicitly have a fail-fast-if-offline retry policy,
> catching the common connectivity ones.
> Testing will be fun here.
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