The taskmanger log does not point a line in my code ..but it seems like the error occurs while it is trying to fetch kinesis record inside connector jar
red sequence number 49572261908151269541343187919820576263466496304458235906 2017-04-13 23:28:23,470 INFO org.apache.flink.streaming.connectors.kinesis.FlinkKinesisConsumer - Subtask 0 is seeding the fetcher with restored shard KinesisStreamShard{streamName='dev-ingest-kinesis-us-west-2', shard='{ShardId: shardId-000000000009,HashKeyRange: {StartingHashKey: 306254130228844617117037146688591390310,EndingHashKey: 340282366920938463463374607431768211455},SequenceNumberRange: {StartingSequenceNumber: 49572254078827945986407789245674345090539511066904232082,}}'}, starting state set to the restored sequence number LATEST_SEQUENCE_NUM 2017-04-13 23:28:23,471 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) 2017-04-13 23:28:23,471 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) 2017-04-13 23:28:23,472 INFO org.apache.flink.runtime.taskmanager.Task - Source: Custom Source (1/1) (8a7301a437cb2d052208ee42c994104b) switched from CANCELING to CANCELED. 2017-04-13 23:28:23,471 INFO org.apache.flink.streaming.connectors.kinesis.FlinkKinesisConsumer - Subtask 0 is seeding the fetcher with restored shard KinesisStreamShard{streamName='dev-ingest-kinesis-us-west-2', shard='{ShardId: shardId-000000000006,HashKeyRange: {StartingHashKey: 204169420152563078078024764459060926873,EndingHashKey: 238197656844656924424362225202237748018},SequenceNumberRange: {StartingSequenceNumber: 49572254078761043750812197376249737935721565982386290786,}}'}, starting state set to the restored sequence number LATEST_SEQUENCE_NUM 2017-04-13 23:28:23,472 INFO org.apache.flink.runtime.taskmanager.Task - Freeing task resources for Source: Custom Source (1/1) (8a7301a437cb2d052208ee42c994104b). From: Sathi Chowdhury <sathi.chowdh...@elliemae.com> Date: Thursday, April 13, 2017 at 5:44 PM To: Ted Yu <yuzhih...@gmail.com> Cc: "user@flink.apache.org" <user@flink.apache.org> Subject: Re: Flink errors out and job fails--IOException from CollectSink.open() 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/<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.kidder.io%2F2017%2F02%2F15%2Fflink-kinesis-streaming-connector%2F&data=01%7C01%7C%7Cfc97be832d1a4062d75608d482cf675f%7C0d009d13c2cd47d891dd2ae838b00d4b%7C0&sdata=avPl4%2FU5DTjZW09Zby9CeUttUNpiGWH%2Bvnycy9PhUDA%3D&reserved=0> 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. 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