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https://issues.apache.org/jira/browse/TEZ-3124?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15159919#comment-15159919
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Jeff Zhang edited comment on TEZ-3124 at 2/24/16 12:07 AM:
-----------------------------------------------------------
RecoveryParser will scan the recovery files from the oldest attempt to latest
attempt. And will pick up the latest VertexInitializedEvent if there's multiple
VertexInitializedEvent. The root cause is that we will still log
VertexInitializedEvent if shouldSkipInit() is true but in this cause there's
zero initGeneratedEvent in the VertexInitializedEvent which cause the next
recovery hangs. I can reproduce it in the test case and verify it is resolved
after this patch.
was (Author: zjffdu):
RecoveryParser will scan the recovery files from the oldest attempt to latest
attempt. And will pick up the latest VertexInitializedEvent if there's multiple
VertexInitializedEvent. The root cause is that we will still log
VertexInitializedEvent if shouldSkipInit() is true and in this cause there's
zero initGeneratedEvent in the VertexInitializedEvent which cause the next
recovery hangs. I can reproduce it in the test case and verify it is resolved
after this patch.
> Running task hangs due to missing event to initialize input in recovery
> -----------------------------------------------------------------------
>
> Key: TEZ-3124
> URL: https://issues.apache.org/jira/browse/TEZ-3124
> Project: Apache Tez
> Issue Type: Bug
> Affects Versions: 0.8.2
> Reporter: Jeff Zhang
> Assignee: Jeff Zhang
> Labels: Recovery
> Fix For: 0.8.3
>
> Attachments: TEZ-3124-1.patch, TEZ-3124-2.patch, TEZ-3124-3.patch,
> TEZ-3124-4.patch, a.log
>
>
> {noformat}
> 2016-02-09 04:48:42 Starting to run new task attempt:
> attempt_1454993155302_0001_1_00_000061_3
> /attempt_1454993155302_0001_1_00_000061
> 2016-02-09 04:48:43,196 [INFO] [I/O Setup 0 Initialize: {MRInput}]
> |input.MRInput|: MRInput using newmapreduce API=true, split via event=true,
> numPhysicalInputs=1
> 2016-02-09 04:48:43,200 [INFO] [I/O Setup 0 Initialize: {MRInput}]
> |input.MRInputLegacy|: MRInput MRInputLegacy deferring initialization
> 2016-02-09 04:48:43,333 [INFO] [TezChild]
> |runtime.LogicalIOProcessorRuntimeTask|: Initialized processor
> 2016-02-09 04:48:43,333 [INFO] [TezChild]
> |runtime.LogicalIOProcessorRuntimeTask|: Waiting for 2 initializers to finish
> 2016-02-09 04:48:43,333 [INFO] [TezChild]
> |runtime.LogicalIOProcessorRuntimeTask|: Waiting for 1 initializers to finish
> 2016-02-09 04:48:43,333 [INFO] [TezChild]
> |runtime.LogicalIOProcessorRuntimeTask|: All initializers finished
> 2016-02-09 04:48:43,345 [INFO] [TezChild] |resources.MemoryDistributor|:
> InitialRequests=[MRInput:INPUT:0:org.apache.tez.mapreduce.input.MRInputLegacy],
>
> [ireduce1:OUTPUT:1802502144:org.apache.tez.runtime.library.output.OrderedPartitionedKVOutput]
> 2016-02-09 04:48:43,559 [INFO] [TezChild]
> |resources.WeightedScalingMemoryDistributor|:
> ScaleRatiosUsed=[PARTITIONED_UNSORTED_OUTPUT:1][UNSORTED_OUTPUT:1][UNSORTED_INPUT:1][SORTED_OUTPUT:12][SORTED_MERGED_INPUT:12][PROCESSOR:1][OTHER:1]
> 2016-02-09 04:48:43,563 [INFO] [TezChild]
> |resources.WeightedScalingMemoryDistributor|: InitialReservationFraction=0.3,
> AdditionalReservationFractionForIOs=0.03,
> finalReserveFractionUsed=0.32999999999999996
> 2016-02-09 04:48:43,564 [INFO] [TezChild]
> |resources.WeightedScalingMemoryDistributor|: Scaling Requests. NumRequests:
> 2, numScaledRequests: 13, TotalRequested: 1802502144, TotalRequestedScaled:
> 1.663848132923077E9, TotalJVMHeap: 2577399808, TotalAvailable: 1726857871,
> TotalRequested/TotalJVMHeap:0.70
> 2016-02-09 04:48:43,564 [INFO] [TezChild] |resources.MemoryDistributor|:
> Allocations=[MRInput:org.apache.tez.mapreduce.input.MRInputLegacy:INPUT:0:0],
> [ireduce1:org.apache.tez.runtime.library.output.OrderedPartitionedKVOutput:OUTPUT:1802502144:1726857871]
> 2016-02-09 04:48:43,564 [INFO] [TezChild]
> |runtime.LogicalIOProcessorRuntimeTask|: Starting Inputs/Outputs
> 2016-02-09 04:48:43,572 [INFO] [I/O Setup 1 Start: {MRInput}]
> |runtime.LogicalIOProcessorRuntimeTask|: Started Input with src edge: MRInput
> 2016-02-09 04:48:43,572 [INFO] [TezChild]
> |runtime.LogicalIOProcessorRuntimeTask|: Input: MRInput being auto started by
> the framework. Subsequent instances will not be auto-started
> 2016-02-09 04:48:43,573 [INFO] [TezChild]
> |runtime.LogicalIOProcessorRuntimeTask|: Num IOs determined for AutoStart: 1
> 2016-02-09 04:48:43,574 [INFO] [TezChild]
> |runtime.LogicalIOProcessorRuntimeTask|: Waiting for 1 IOs to start
> 2016-02-09 04:48:43,574 [INFO] [TezChild]
> |runtime.LogicalIOProcessorRuntimeTask|: AutoStartComplete
> 2016-02-09 04:48:43,583 [INFO] [TezChild] |task.TaskRunner2Callable|: Running
> task, taskAttemptId=attempt_1454993155302_0001_1_00_000061_3
> 2016-02-09 04:48:43,583 [INFO] [TezChild] |map.MapProcessor|: Running map:
> attempt_1454993155302_0001_1_00_000061_3_10001
> 2016-02-09 04:48:43,675 [INFO] [TezChild] |impl.ExternalSorter|: ireduce1
> using: memoryMb=1646, keySerializerClass=class
> org.apache.hadoop.io.IntWritable,
> valueSerializerClass=org.apache.hadoop.io.serializer.WritableSerialization$WritableSerializer@5f143de6,
> comparator=org.apache.hadoop.io.IntWritable$Comparator@ec52d1f,
> partitioner=org.apache.tez.mapreduce.partition.MRPartitioner,
> serialization=org.apache.hadoop.io.serializer.WritableSerialization
> 2016-02-09 04:48:43,686 [INFO] [TezChild] |impl.PipelinedSorter|: Setting up
> PipelinedSorter for ireduce1: , UsingHashComparator=false
> 2016-02-09 04:48:45,093 [INFO] [TezChild] |impl.PipelinedSorter|: Newly
> allocated block size=1725956096, index=0, Number of buffers=1,
> currentAllocatableMemory=0, currentBufferSize=1725956096, total=1725956096
> 2016-02-09 04:48:45,093 [INFO] [TezChild] |impl.PipelinedSorter|: Pre
> allocating rest of memory buffers upfront
> 2016-02-09 04:48:45,093 [INFO] [TezChild] |impl.PipelinedSorter|: Setting up
> PipelinedSorter for ireduce1: , UsingHashComparator=false#blocks=1,
> maxMemUsage=1725956096, lazyAllocateMem=false, minBlockSize=2097152000,
> initial BLOCK_SIZE=1725956096, finalMergeEnabled=true,
> pipelinedShuffle=false, sendEmptyPartitions=true, tez.runtime.io.sort.mb=1646
> 2016-02-09 04:48:45,099 [INFO] [TezChild] |impl.PipelinedSorter|: ireduce1:
> reserved.remaining()=1725956096, reserved.metasize=16777216
> 2016-02-09 04:48:45,175 [INFO] [TezChild] |input.MRInput|: Initialized
> MRInput: MRInput
> 2016-02-09 08:55:40,790 [INFO] [TaskHeartbeatThread] |task.TaskReporter|:
> Received should die response from AM
> 2016-02-09 08:55:40,791 [INFO] [TaskHeartbeatThread] |task.TaskReporter|:
> Asked to die via task heartbeat
> 2016-02-09 08:55:40,796 [INFO] [TaskHeartbeatThread] |task.TezTaskRunner2|:
> Attempting to abort attempt_1454993155302_0001_1_00_000061_3 due to an
> invocation of shutdownRequested
> 2016-02-09 08:55:40,804 [INFO] [TezChild] |task.TaskRunner2Callable|:
> Cleaning up task attempt_1454993155302_0001_1_00_000061_3, stopRequested=true
> 2016-02-09 08:55:40,805 [INFO] [TezChild]
> |runtime.LogicalIOProcessorRuntimeTask|: Final Counters for
> attempt_1454993155302_0001_1_00_000061_3: Counters: 20
> [[org.apache.tez.common.counters.TaskCounter SPILLED_RECORDS=0,
> INPUT_RECORDS_PROCESSED=0, OUTPUT_RECORDS=0, OUTPUT_BYTES=0,
> OUTPUT_BYTES_WITH_OVERHEAD=0, OUTPUT_BYTES_PHYSICAL=0,
> ADDITIONAL_SPILLS_BYTES_WRITTEN=0, ADDITIONAL_SPILLS_BYTES_READ=0,
> ADDITIONAL_SPILL_COUNT=0,
> SHUFFLE_CHUNK_COUNT=0][TaskCounter_map_INPUT_MRInput
> INPUT_RECORDS_PROCESSED=0][TaskCounter_map_OUTPUT_ireduce1
> ADDITIONAL_SPILLS_BYTES_READ=0, ADDITIONAL_SPILLS_BYTES_WRITTEN=0,
> ADDITIONAL_SPILL_COUNT=0, OUTPUT_BYTES=0, OUTPUT_BYTES_PHYSICAL=0,
> OUTPUT_BYTES_WITH_OVERHEAD=0, OUTPUT_RECORDS=0, SHUFFLE_CHUNK_COUNT=0,
> SPILLED_RECORDS=0]]
> {noformat}
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