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https://issues.apache.org/jira/browse/SPARK-23308?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16363217#comment-16363217
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Márcio Furlani Carmona commented on SPARK-23308:
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{quote}if your input stream is doing abort/reopen on seek & positioned read, 
then you get many more S3 requests when reading columnar data
{quote}
Good point! I'll see if I can get the actual S3 TPS we're reaching.

 

Regarding the SSE-KMS, we're not using it for encryption, so that shouldn't be 
a problem.

> ignoreCorruptFiles should not ignore retryable IOException
> ----------------------------------------------------------
>
>                 Key: SPARK-23308
>                 URL: https://issues.apache.org/jira/browse/SPARK-23308
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 2.2.1
>            Reporter: Márcio Furlani Carmona
>            Priority: Minor
>
> When `spark.sql.files.ignoreCorruptFiles` is set it totally ignores any kind 
> of RuntimeException or IOException, but some possible IOExceptions may happen 
> even if the file is not corrupted.
> One example is the SocketTimeoutException which can be retried to possibly 
> fetch the data without meaning the data is corrupted.
>  
> See: 
> https://github.com/apache/spark/blob/e30e2698a2193f0bbdcd4edb884710819ab6397c/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/FileScanRDD.scala#L163



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