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Tzu-Li (Gordon) Tai commented on FLINK-6844: -------------------------------------------- Didn't you mention this error: {code} 2017-06-20 15:26:25,518 INFO org.apache.flink.runtime.checkpoint.CheckpointCoordinator - Checkpoint triggering task Source: Custom File Source (1/1) is not being executed at the moment. Aborting checkpoint. {code} ? This doesn't seem to be the Kafka source. The checkpoint is failing because the source isn't running. > TraversableSerializer should implement compatibility methods > ------------------------------------------------------------ > > Key: FLINK-6844 > URL: https://issues.apache.org/jira/browse/FLINK-6844 > Project: Flink > Issue Type: Bug > Components: Type Serialization System > Affects Versions: 1.3.0 > Reporter: Tzu-Li (Gordon) Tai > Assignee: Tzu-Li (Gordon) Tai > Priority: Blocker > Labels: flink-rel-1.3.1-blockers > Fix For: 1.3.1, 1.4.0 > > > The {{TraversableSerializer}} may be used as a serializer for managed state > and takes part in checkpointing, therefore should implement the compatibility > methods. -- This message was sent by Atlassian JIRA (v6.4.14#64029)