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Posted to issues@flink.apache.org by "Tzu-Li (Gordon) Tai (JIRA)" <ji...@apache.org> on 2017/05/22 05:27:04 UTC

[jira] [Updated] (FLINK-6653) Avoid directly serializing AWS's Shard class in Kinesis consumer's checkpoints

     [ https://issues.apache.org/jira/browse/FLINK-6653?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tzu-Li (Gordon) Tai updated FLINK-6653:
---------------------------------------
    Description: 
Currently, the Kinesis consumer's checkpoints directly serialize AWS's {{Shard}} instances in checkpoints. This makes bumping AWS library versions hard, since any change to the {{Shard}} class by AWS will break checkpoint compatibility.

We should either have custom serialization for {{KinesisStreamShard}}, or disintegrate the information in {{Shard}}. Ideally, it would be best to make {{KinesisStreamShard}} and {{SequenceNumber}} to be non-serializable, hence avoiding Java serialization in the checkpoints.

  was:
Currently, the Kinesis consumer's checkpoints directly serialize AWS's `Shard` instances in checkpoints. This makes bumping AWS library versions hard, since any change to the `Shard` class by AWS will break checkpoint compatibility.

We should either have custom serialization for `KinesisStreamShard`, or disintegrate the information in `Shard`. Ideally, it would be best to make `KinesisStreamShard` and `SequenceNumber` to be non-serializable, hence avoiding Java serialization in the checkpoints.


> Avoid directly serializing AWS's Shard class in Kinesis consumer's checkpoints
> ------------------------------------------------------------------------------
>
>                 Key: FLINK-6653
>                 URL: https://issues.apache.org/jira/browse/FLINK-6653
>             Project: Flink
>          Issue Type: Improvement
>          Components: Kinesis Connector
>            Reporter: Tzu-Li (Gordon) Tai
>
> Currently, the Kinesis consumer's checkpoints directly serialize AWS's {{Shard}} instances in checkpoints. This makes bumping AWS library versions hard, since any change to the {{Shard}} class by AWS will break checkpoint compatibility.
> We should either have custom serialization for {{KinesisStreamShard}}, or disintegrate the information in {{Shard}}. Ideally, it would be best to make {{KinesisStreamShard}} and {{SequenceNumber}} to be non-serializable, hence avoiding Java serialization in the checkpoints.



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