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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