EugeneYushin opened a new pull request #6760: [FLINK-10422] Follow AWS specs in 
Kinesis Consumer
URL: https://github.com/apache/flink/pull/6760
 
 
   ## What is the purpose of the change
   
   Inline Flink Kinesis connector with AWS specs related to shard id 
conventions.
   Related Jira story: https://issues.apache.org/jira/browse/FLINK-10422
   Mailing list conversation: 
https://lists.apache.org/thread.html/96de3bac9761564767cf283b58d664f5ae1b076e0c4431620552af5b@%3Cdev.flink.apache.org%3E
   
   ## Brief change log
     - Remove custom ShardId comparator logic as it's redundant, rely on AWS 
client libs to get shard list with exclusive start shard id
     - Remove test related cleaning in production code
     - Add tests to check correct shards a returned on second run of 
`listShards` method for 2 cases: new shards are present, no new shards
   
   ## Verifying this change
   
   This change added tests and can be verified as follows:
     - Run 
`testGetShardListWithNewShardsOnSecondRun/testGetShardWithNoNewShards` unit 
tests in `KinesisProxyTest.class`
   
   ## Does this pull request potentially affect one of the following parts:
   
     - Dependencies (does it add or upgrade a dependency): no
     - The public API, i.e., is any changed class annotated with 
`@Public(Evolving)`: no
     - The serializers: no
     - The runtime per-record code paths (performance sensitive): no
     - Anything that affects deployment or recovery: JobManager (and its 
components), Checkpointing, Yarn/Mesos, ZooKeeper: no
     - The S3 file system connector: no
   
   ## Documentation
   
     - Does this pull request introduce a new feature? no

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