Hi Flink users, I used flink-1.12.5 kinesis connector to consume data from kinesis.
>From time to time I am getting IOException or StacklessClosedChannelException, which will fail the Flink operator when it by default reaches 10 times and trigger the entire job to restart. I have two questions: 1. I am wondering if we can have a better way to handle the error without restarting the Flink job. Restarting the job is time-consuming and will often slow down the data consumption. 2. These two errors are treated as retryable exceptions, instead of recoverable exceptions. Are they not recoverable if we don't restart the Flink source operator? Followed are the exceptions: org.apache.flink.streaming.connectors.kinesis.internals.publisher.fanout.FanOutShardSubscriber$RetryableFanOutSubscriberException: org.apache.flink.kinesis.shaded.io.netty.channel.StacklessClosedChannelException at org.apache.flink.streaming.connectors.kinesis.internals.publisher.fanout.FanOutShardSubscriber.handleError(FanOutShardSubscriber.java:296) ~[blob_p-6581ced9ade704dee24c2632e701b413d2e656ba-f7515b4b21d25cb44b07411a9ad294e8:?] at org.apache.flink.streaming.connectors.kinesis.internals.publisher.fanout.FanOutShardSubscriber.consumeAllRecordsFromKinesisShard(FanOutShardSubscriber.java:363) ~[blob_p-6581ced9ade704dee24c2632e701b413d2e656ba-f7515b4b21d25cb44b07411a9ad294e8:?] at org.apache.flink.streaming.connectors.kinesis.internals.publisher.fanout.FanOutShardSubscriber.subscribeToShardAndConsumeRecords(FanOutShardSubscriber.java:188) ~[blob_p-6581ced9ade704dee24c2632e701b413d2e656ba-f7515b4b21d25cb44b07411a9ad294e8:?] at org.apache.flink.streaming.connectors.kinesis.internals.publisher.fanout.FanOutRecordPublisher.runWithBackoff(FanOutRecordPublisher.java:154) [blob_p-6581ced9ade704dee24c2632e701b413d2e656ba-f7515b4b21d25cb44b07411a9ad294e8:?] or org.apache.flink.streaming.connectors.kinesis.internals.publisher.fanout.FanOutShardSubscriber$RetryableFanOutSubscriberException: java.io.IOException: An error occurred on the connection: null at org.apache.flink.streaming.connectors.kinesis.internals.publisher.fanout.FanOutShardSubscriber.handleError(FanOutShardSubscriber.java:296) ~[blob_p-6581ced9ade704dee24c2632e701b413d2e656ba-f7515b4b21d25cb44b07411a9ad294e8:?] at org.apache.flink.streaming.connectors.kinesis.internals.publisher.fanout.FanOutShardSubscriber.consumeAllRecordsFromKinesisShard(FanOutShardSubscriber.java:363) ~[blob_p-6581ced9ade704dee24c2632e701b413d2e656ba-f7515b4b21d25cb44b07411a9ad294e8:?] at org.apache.flink.streaming.connectors.kinesis.internals.publisher.fanout.FanOutShardSubscriber.subscribeToShardAndConsumeRecords(FanOutShardSubscriber.java:188) ~[blob_p-6581ced9ade704dee24c2632e701b413d2e656ba-f7515b4b21d25cb44b07411a9ad294e8:?] at org.apache.flink.streaming.connectors.kinesis.internals.publisher.fanout.FanOutRecordPublisher.runWithBackoff(FanOutRecordPublisher.java:154) [blob_p-6581ced9ade704dee24c2632e701b413d2e656ba-f7515b4b21d25cb44b07411a9ad294e8:?] Thanks Leon
