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[TEZ-3984] Shuffle: Out of Band DME event sending causes errors - Tez - [issue]
...In case of a task Input throwing an exception, the outputs are also closed in the LogicalIOProcessorRuntimeTask.cleanup().Cleanup ignore all the events returned by output close, however if a...    Author: Gopal V , 2018-09-11, 22:30
[TEZ-3980] ShuffleRunner: the wake loop needs to check for shutdown - Tez - [issue]
...In the ShuffleRunner threads, there's a loop which does not terminate if the task threads get killed.          while ((runningFetchers.size() >= numFetchers || pe...    Author: Gopal V , 2018-08-29, 16:11
[TEZ-3985] Correctness: Throw a clear exception for DMEs sent during cleanup - Tez - [issue]
...If a DME is sent during cleanup, that implies that the .close() of the LogicalIOProcessorRuntimeTask did not succeed and therefore these events are an error condition.These events should not...    Author: Gopal V , 2018-08-28, 22:56
[TEZ-3958] Add internal vertex priority information into the tez debug information - Tez - [issue]
...Adding the actual vertex priority as computed by Tez into the debug file would allows the debugging of task pre-emption issues when the DAG is no longer a tree.There are pre-emption ...    Author: Gopal V , 2018-08-28, 03:38
[TEZ-3974] Tez: Correctness regression of TEZ-955 in TEZ-2937 - Tez - [issue]
...TEZ-2937 might have introduced a race condition for Tez output events, along with TEZ-2237      // Close the Outputs.      for (OutputSpec outputSpec : outputSp...    Author: Gopal V , 2018-08-27, 22:34
[TEZ-3969] TaskAttemptImpl: static fields initialized in instance ctor - Tez - [issue]
...The TODO is probably well-placed (& the bug looks somewhat intentional to minimize the size of TaskAttemptImpl object).This isn't causing any bugs at the moment, because the block is cal...    Author: Gopal V , 2018-08-20, 22:38
[TEZ-3965] TestMROutput: Fix the hard-coded "/tmp/output" paths - Tez - [issue]
...testNewAPI_SequenceFileOutputFormat(org.apache.tez.mapreduce.output.TestMROutput)  Time elapsed: 0.086 sec  <<< ERROR! Mkdirs failed to create /tmp/out...    Author: Gopal V , 2018-07-23, 18:44
[TEZ-3967] DAGImpl: dag lock is unfair and can starve the writers - Tez - [issue]
...Found when debugging HIVE-20103, that a reader arriving when another reader is active can postpone a writer from obtaining a write-lock.This is fundamentally bad for the DAGImpl as useful pr...    Author: Gopal V , 2018-07-12, 21:04
[TEZ-3884] Hadoop3-beta1 fixes for Tez tests - Tez - [issue]
...[ERROR] /grid/5/dev/gopalv/llap-autobuild/tez/tez-api/src/test/java/org/apache/tez/client/[48,30] cannot find symbol[ERROR] symbol:   class DistributedFileSystem...    Author: Gopal V , 2018-07-11, 17:33
[TEZ-3962] Configuration decode leaks an Inflater object - Tez - [issue]
...public static Configuration createConfFromByteString(ByteString byteString) throws IOException {...    InflaterInputStream uncompressIs = new InflaterInputStream(byteString.newInpu...    Author: Gopal V , 2018-06-28, 21:19