LocalBufferPoo????

Tue, 27 Oct 2020 03:52:03 -0700 

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??????????????????????????????????????????????????????????????????????????????????????jstack??????????source??????????????????????????????????????????????????
"Legacy Source Thread - Source: Custom Source (1/2)" #95 prio=5 os_prio=0 
tid=0x00007fafa4018000 nid=0x57d waiting on condition [0x00007fb03d48a000]
   java.lang.Thread.State: WAITING (parking)
        at sun.misc.Unsafe.park(Native Method)
        - parking to wait for&nbsp; <0x000000074afaf508&gt; (a 
java.util.concurrent.CompletableFuture$Signaller)
        at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
        at 
java.util.concurrent.CompletableFuture$Signaller.block(CompletableFuture.java:1693)
        at 
java.util.concurrent.ForkJoinPool.managedBlock(ForkJoinPool.java:3323)
        at 
java.util.concurrent.CompletableFuture.waitingGet(CompletableFuture.java:1729)
        at 
java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1895)
        at 
org.apache.flink.runtime.io.network.buffer.LocalBufferPool.requestMemorySegmentBlocking(LocalBufferPool.java:241)
        at 
org.apache.flink.runtime.io.network.buffer.LocalBufferPool.requestBufferBuilderBlocking(LocalBufferPool.java:210)
        at 
org.apache.flink.runtime.io.network.partition.ResultPartition.getBufferBuilder(ResultPartition.java:189)
        at 
org.apache.flink.runtime.io.network.api.writer.ChannelSelectorRecordWriter.requestNewBufferBuilder(ChannelSelectorRecordWriter.java:103)
        at 
org.apache.flink.runtime.io.network.api.writer.RecordWriter.copyFromSerializerToTargetChannel(RecordWriter.java:151)
        at 
org.apache.flink.runtime.io.network.api.writer.RecordWriter.emit(RecordWriter.java:122)
        at 
org.apache.flink.runtime.io.network.api.writer.ChannelSelectorRecordWriter.emit(ChannelSelectorRecordWriter.java:60)
        at 
org.apache.flink.streaming.runtime.io.RecordWriterOutput.pushToRecordWriter(RecordWriterOutput.java:107)
        at 
org.apache.flink.streaming.runtime.io.RecordWriterOutput.collect(RecordWriterOutput.java:89)
        at 
org.apache.flink.streaming.runtime.io.RecordWriterOutput.collect(RecordWriterOutput.java:45)
        at 
org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:730)
        at 
org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:708)
        at 
org.apache.flink.streaming.api.operators.StreamSourceContexts$NonTimestampContext.collect(StreamSourceContexts.java:104)
        - locked <0x000000074a5f6a98&gt; (a java.lang.Object)
        at 
com.jd.bdp.flink.sink.jimdb.common.SourceTimeMillisMock.run(SourceTimeMillisMock.java:25)
        at 
org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:100)
        at 
org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:63)
        at 
org.apache.flink.streaming.runtime.tasks.SourceStreamTask$LegacySourceFunctionThread.run(SourceStreamTask.java:200)


????????????????????Memory Segment????????flink ui????????Memory Segments 
Available????????????????????????????????????????????????????

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