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From "Ganelin, Ilya" <Ilya.Gane...@capitalone.com>
Subject Possible to gracefully shutdown local cluster?
Date Thu, 03 Sep 2015 19:36:24 GMT
Hello all – I’m using the following code to execute a topology locally:

try {
    LocalMode lma = LocalMode.newInstance();
    Configuration conf = new Configuration(false);
    conf.addResource(this.getClass().getResourceAsStream("/META-INF/properties.xml"));
    lma.prepareDAG(new Application(), conf);
    LocalMode.Controller lc = lma.getController();
    lc.run(15000); // runs for 10 seconds and quits
    lc.shutdown();
} catch (ConstraintViolationException e) {
    Assert.fail("constraint violations: " + e.getConstraintViolations());
}

I am reading from HDFS, operating on the data, and writing it back to HDFS. The HDFS operator
implementations extend AbstractfileInputOperator and AbstractfileOutputOperator respectively.

My issue is that when the timer ends, my operators fail catastrophically, without completing
their current operations (e.g. if reading/writing from HDFS they don’t close the file stream).
Is there a way for this to close gracefully? Is this an issue with the implementations of
the operators or with the way that local topologies are executed?

Error stacks below:

java.util.concurrent.RejectedExecutionException: Task java.util.concurrent.FutureTask@3848436c
rejected from java.util.concurrent.ThreadPoolExecutor@770deac6[Terminated, pool size = 0,
active threads = 0, queued tasks = 0, completed tasks = 20121]
at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2047)
at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:823)
at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1369)
at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:112)
at java.util.concurrent.Executors$DelegatedExecutorService.submit(Executors.java:678)
at com.datatorrent.bufferserver.internal.DataList.flush(DataList.java:226)
at com.datatorrent.bufferserver.server.Server$Publisher.read(Server.java:642)
at com.datatorrent.netlet.AbstractClient.read(AbstractClient.java:117)
at com.datatorrent.netlet.DefaultEventLoop.handleSelectedKey(DefaultEventLoop.java:295)
at com.datatorrent.netlet.DefaultEventLoop.runEventLoop(DefaultEventLoop.java:252)
at com.datatorrent.netlet.DefaultEventLoop.run(DefaultEventLoop.java:100)
at java.lang.Thread.run(Thread.java:745)
2015-09-03 12:23:20,545 [2/RecordMaker I:RecordMaker] DEBUG engine.StreamingContainer teardownNode
- deactivated 2
2015-09-03 12:23:20,544 [IPC Parameter Sending Thread #0] DEBUG ipc.Client run - IPC Client
(467473545) connection to mdcilabpen01.kdc.capitalone.com/10.24.28.46:8020 from zjb238 sending
#14
2015-09-03 12:23:20,543 [9/HdfsOutHdht:HdfsFileOutputOperator] DEBUG hdfs.DFSClient writeChunkImpl
- DFSClient writeChunk allocating new packet seqno=0, src=/tmp/citadel_out/latencies_hdht.txt.1441308190967.tmp,
packetSize=65016, chunksPerPacket=126, bytesCurBlock=0
2015-09-03 12:23:20,546 [1/NewLines:NewlineFileInputOperator] ERROR fs.AbstractFileInputOperator
failureHandling - FS reader error
java.io.IOException: Filesystem closed
at org.apache.hadoop.hdfs.DFSClient.checkOpen(DFSClient.java:808)
at org.apache.hadoop.hdfs.DFSInputStream.readWithStrategy(DFSInputStream.java:830)
at org.apache.hadoop.hdfs.DFSInputStream.read(DFSInputStream.java:896)
at java.io.DataInputStream.read(DataInputStream.java:149)
at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:284)
at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:326)
at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178)
at java.io.InputStreamReader.read(InputStreamReader.java:184)
at java.io.BufferedReader.fill(BufferedReader.java:161)
at java.io.BufferedReader.readLine(BufferedReader.java:324)
at java.io.BufferedReader.readLine(BufferedReader.java:389)
at com.capitalone.vault8.citadel.operators.impl.NewlineFileInputOperator.readEntity(NewlineFileInputOperator.java:78)
at com.capitalone.vault8.citadel.operators.impl.NewlineFileInputOperator.readEntity(NewlineFileInputOperator.java:22)
at com.datatorrent.lib.io.fs.AbstractFileInputOperator.emitTuples(AbstractFileInputOperator.java:653)
at com.datatorrent.stram.engine.InputNode.run(InputNode.java:115)
at com.datatorrent.stram.engine.StreamingContainer$2.run(StreamingContainer.java:1363)




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