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Posted to issues@flink.apache.org by "Stephan Ewen (JIRA)" <ji...@apache.org> on 2018/10/26 13:57:00 UTC
[jira] [Commented] (FLINK-10664) Flink: Checkpointing fails with S3
exception - Please reduce your request rate
[ https://issues.apache.org/jira/browse/FLINK-10664?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16665210#comment-16665210 ]
Stephan Ewen commented on FLINK-10664:
--------------------------------------
I would suggest to try and use the {{flink-s3-fs-presto}} instead of relying on Hadoop in the classpath.
That mentioned file system does fewer requests to S3 by skipping on some redundant metadata operations.
> Flink: Checkpointing fails with S3 exception - Please reduce your request rate
> ------------------------------------------------------------------------------
>
> Key: FLINK-10664
> URL: https://issues.apache.org/jira/browse/FLINK-10664
> Project: Flink
> Issue Type: Improvement
> Components: JobManager, TaskManager
> Affects Versions: 1.5.4, 1.6.1
> Reporter: Pawel Bartoszek
> Priority: Major
>
> When the checkpoint is created for the job which has many operators it could happen that Flink uploads too many checkpoint files, at the same time, to S3 resulting in throttling from S3.
>
> {code:java}
> Caused by: org.apache.hadoop.fs.s3a.AWSS3IOException: saving output on flink/state-checkpoints/7bbd6495f90257e4bc037ecc08ba21a5/chk-19/4422b088-0836-4f12-bbbe-7e731da11231: com.amazonaws.services.s3.model.AmazonS3Exception: Please reduce your request rate. (Service: Amazon S3; Status Code: 503; Error Code: SlowDown; Request ID: XXXX; S3 Extended Request ID: XXX), S3 Extended Request ID: XXX: Please reduce your request rate. (Service: Amazon S3; Status Code: 503; Error Code: SlowDown; Request ID: 5310EA750DF8B949; S3 Extended Request ID: XXX)
> at org.apache.hadoop.fs.s3a.S3AUtils.translateException(S3AUtils.java:178)
> at org.apache.hadoop.fs.s3a.S3AOutputStream.close(S3AOutputStream.java:121)
> at org.apache.hadoop.fs.FSDataOutputStream$PositionCache.close(FSDataOutputStream.java:74)
> at org.apache.hadoop.fs.FSDataOutputStream.close(FSDataOutputStream.java:108)
> at org.apache.flink.runtime.fs.hdfs.HadoopDataOutputStream.close(HadoopDataOutputStream.java:52)
> at org.apache.flink.core.fs.ClosingFSDataOutputStream.close(ClosingFSDataOutputStream.java:64)
> at org.apache.flink.runtime.state.filesystem.FsCheckpointStreamFactory$FsCheckpointStateOutputStream.closeAndGetHandle(FsCheckpointStreamFactory.java:311){code}
>
> Can the upload be retried with kind of back off?
>
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