Hi Ted, Sorry for my big font earlier…was not intended ☺ I am on flink 1.2.0 I built flink-connector-kinesis_2.10-1.2.0.jar from source and included in the fatjar I am running. Followed this http://www.kidder.io/2017/02/15/flink-kinesis-streaming-connector/
From code I read a kinesis stream using consumerConfig.setProperty(ConsumerConfigConstants.AWS_REGION, region); consumerConfig.setProperty(ConsumerConfigConstants.DEFAULT_STREAM_INITIAL_POSITION, "LATEST"); consumerConfig.setProperty(ConsumerConfigConstants.AWS_CREDENTIALS_PROVIDER, "AUTO"); consumerConfig.setProperty(ConsumerConfigConstants.SHARD_GETRECORDS_MAX, "10"); consumerConfig.setProperty(ConsumerConfigConstants.SHARD_GETRECORDS_RETRIES, "200"); consumerConfig.setProperty(ConsumerConfigConstants.SHARD_GETRECORDS_INTERVAL_MILLIS, "2000"); DataStream<Map<String, Object>> stream = env.addSource(new FlinkKinesisConsumer<>(inputStream, new MyJsonDeserializationSchema(), consumerConfig)); While I push the json event to the Kinesis stream intermittently I see this NPE and flink job fails 2017-04-14 00:31:54,672 WARN org.apache.flink.streaming.connectors.kinesis.FlinkKinesisConsumer - Error while closing Kinesis data fetcher java.lang.NullPointerException at org.apache.flink.streaming.connectors.kinesis.internals.KinesisDataFetcher.shutdownFetcher(KinesisDataFetcher.java:472) at org.apache.flink.streaming.connectors.kinesis.FlinkKinesisConsumer.cancel(FlinkKinesisConsumer.java:246) at org.apache.flink.streaming.connectors.kinesis.FlinkKinesisConsumer.close(FlinkKinesisConsumer.java:256) at org.apache.flink.api.common.functions.util.FunctionUtils.closeFunction(FunctionUtils.java:43) at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.dispose(AbstractUdfStreamOperator.java:127) at org.apache.flink.streaming.runtime.tasks.StreamTask.disposeAllOperators(StreamTask.java:442) at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:343) at org.apache.flink.runtime.taskmanager.Task.run(Task.java:655) at java.lang.Thread.run(Thread.java:745) Thanks Sathi From: Ted Yu <yuzhih...@gmail.com> Date: Thursday, April 13, 2017 at 5:02 PM To: Sathi Chowdhury <sathi.chowdh...@elliemae.com> Cc: "user@flink.apache.org" <user@flink.apache.org> Subject: Re: Flink errors out and job fails--IOException from CollectSink.open() Can you give us a bit more information ? release of flink snippet of your code Thanks =============Notice to Recipient: This e-mail transmission, and any documents, files or previous e-mail messages attached to it may contain information that is confidential or legally privileged, and intended for the use of the individual or entity named above. If you are not the intended recipient, or a person responsible for delivering it to the intended recipient, you are hereby notified that you must not read this transmission and that any disclosure, copying, printing, distribution or use of any of the information contained in or attached to this transmission is STRICTLY PROHIBITED. If you have received this transmission in error, please immediately notify the sender by telephone or return e-mail and delete the original transmission and its attachments without reading or saving in any manner. Thank you. =============