【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 
同事提供的flink项目，在他那边执行可以，在我这边报奇怪的错误，而且mq的source也没触发，报的错如下：
java.lang.RuntimeException: Buffer pool is destroyed.
at org.apache.flink.streaming.runtime.io.RecordWriterOutput.pushToRecordWriter(RecordWriterOutput.java:110) ~[flink-streaming-java_2.11-1.8.1.jar:1.8.1]
at org.apache.flink.streaming.runtime.io.RecordWriterOutput.collect(RecordWriterOutput.java:89) ~[flink-streaming-java_2.11-1.8.1.jar:1.8.1]
at org.apache.flink.streaming.runtime.io.RecordWriterOutput.collect(RecordWriterOutput.java:45) ~[flink-streaming-java_2.11-1.8.1.jar:1.8.1]
at org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:718) ~[flink-streaming-java_2.11-1.8.1.jar:1.8.1]
at org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:696) ~[flink-streaming-java_2.11-1.8.1.jar:1.8.1]
at org.apache.flink.streaming.api.operators.StreamMap.processElement(StreamMap.java:41) ~[flink-streaming-java_2.11-1.8.1.jar:1.8.1]
at org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.pushToOperator(OperatorChain.java:579) ~[flink-streaming-java_2.11-1.8.1.jar:1.8.1]
at org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:554) ~[flink-streaming-java_2.11-1.8.1.jar:1.8.1]
at org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:534) ~[flink-streaming-java_2.11-1.8.1.jar:1.8.1]
at org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:718) ~[flink-streaming-java_2.11-1.8.1.jar:1.8.1]
at org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:696) ~[flink-streaming-java_2.11-1.8.1.jar:1.8.1]
at org.apache.flink.streaming.api.operators.StreamSourceContexts$NonTimestampContext.collect(StreamSourceContexts.java:104) ~[flink-streaming-java_2.11-1.8.1.jar:1.8.1]
at com.ucarinc.framework.flink.connectors.flexq.FlexQSource.run(FlexQSource.java:204) ~[flink-connector-flexq-1.8.500-20191206.054312-28.jar:1.8.500-SNAPSHOT]
at org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:93) ~[flink-streaming-java_2.11-1.8.1.jar:1.8.1]
at org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:57) ~[flink-streaming-java_2.11-1.8.1.jar:1.8.1]
at org.apache.flink.streaming.runtime.tasks.SourceStreamTask.run(SourceStreamTask.java:97) ~[flink-streaming-java_2.11-1.8.1.jar:1.8.1]
at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:300) ~[flink-streaming-java_2.11-1.8.1.jar:1.8.1]
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:711) [flink-runtime_2.11-1.8.1.jar:1.8.1]
at java.lang.Thread.run(Thread.java:745) [?:1.8.0_31]
Caused by: java.lang.IllegalStateException: Buffer pool is destroyed.
at org.apache.flink.runtime.io.network.buffer.LocalBufferPool.internalRequestMemorySegment(LocalBufferPool.java:264) ~[flink-runtime_2.11-1.8.1.jar:1.8.1]
at org.apache.flink.runtime.io.network.buffer.LocalBufferPool.requestMemorySegment(LocalBufferPool.java:240) ~[flink-runtime_2.11-1.8.1.jar:1.8.1]
at org.apache.flink.runtime.io.network.buffer.LocalBufferPool.requestBufferBuilderBlocking(LocalBufferPool.java:218) ~[flink-runtime_2.11-1.8.1.jar:1.8.1]
at org.apache.flink.runtime.io.network.api.writer.RecordWriter.requestNewBufferBuilder(RecordWriter.java:264) ~[flink-runtime_2.11-1.8.1.jar:1.8.1]
at org.apache.flink.runtime.io.network.api.writer.RecordWriter.getBufferBuilder(RecordWriter.java:257) ~[flink-runtime_2.11-1.8.1.jar:1.8.1]
at org.apache.flink.runtime.io.network.api.writer.RecordWriter.copyFromSerializerToTargetChannel(RecordWriter.java:177) ~[flink-runtime_2.11-1.8.1.jar:1.8.1]
at org.apache.flink.runtime.io.network.api.writer.RecordWriter.emit(RecordWriter.java:162) ~[flink-runtime_2.11-1.8.1.jar:1.8.1]
at org.apache.flink.runtime.io.network.api.writer.RecordWriter.emit(RecordWriter.java:128) ~[flink-runtime_2.11-1.8.1.jar:1.8.1]
at org.apache.flink.streaming.runtime.io.RecordWriterOutput.pushToRecordWriter(RecordWriterOutput.java:107) ~[flink-streaming-java_2.11-1.8.1.jar:1.8.1]
... 18 more
2019-12-10 16:28:07 [INFO] org.apache.flink.runtime.taskmanager.Task.run(Task.java:810) - Freeing task resources for Source: Custom Source -> Map (3/8) (c642ee0dc9ef5cd491e91927458c7877).
2019-12-10 16:28:07 [ERROR] org.apache.flink.runtime.taskmanager.Task.run(Task.java:845) - FATAL - exception in resource cleanup of task Source: Custom Source -> Map (3/8) (c642ee0dc9ef5cd491e91927458c7877).
java.lang.IllegalStateException: Memory manager has been shut down.
at org.apache.flink.runtime.memory.MemoryManager.releaseAll(MemoryManager.java:480) ~[flink-runtime_2.11-1.8.1.jar:1.8.1]
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:828) [flink-runtime_2.11-1.8.1.jar:1.8.1]
at java.lang.Thread.run(Thread.java:745) [?:1.8.0_31]
2019-12-10 16:28:07 [ERROR] org.apache.flink.runtime.taskexecutor.TaskExecutor$TaskManagerActionsImpl.notifyFatalError(TaskExecutor.java:1666) - FATAL - exception in resource cleanup of task Source: Custom Source -> Map (3/8) (c642ee0dc9ef5cd491e91927458c7877).
java.lang.IllegalStateException: Memory manager has been shut down.
at org.apache.flink.runtime.memory.MemoryManager.releaseAll(MemoryManager.java:480) ~[flink-runtime_2.11-1.8.1.jar:1.8.1]
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:828) [flink-runtime_2.11-1.8.1.jar:1.8.1]
at java.lang.Thread.run(Thread.java:745) [?:1.8.0_31]
排查半天不得其解，最后怀疑是jdk版本问题，发现我本地jdk版本1.8.0_31，他的1.8.0_151
他是异地的，找了个边上的同事，要了份1.8.0_181的版本
试了下，没报错了
来源：oschina
链接：https://my.oschina.net/dxqr/blog/3141634