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From Gopal V <gop...@apache.org>
Subject Re: OOM with Hive on Tez
Date Thu, 06 Nov 2014 21:01:01 GMT
On 11/6/14, 11:09 AM, Kostas Tzoumas wrote:
> I am running into the same error [1] with plain Tez (not Hive):
>
> Any advice on what configuration parameters I should start looking at?

Both issues are related to the Tez memory distributor 
(InitialMemoryAllocator) impl used.

http://tez.apache.org/releases/0.5.1/tez-runtime-library-javadocs/org/apache/tez/runtime/library/resources/WeightedScalingMemoryDistributor.html

This divides memory up between different inputs and outputs, so that the 
overall memory usage is capped without hitting GC issues.

Suma's issue was probably that tez-0.4 (ergo, hive-13) didn't have a 
memory distributor implementation.

http://people.apache.org/~gopalv/tpch-plans/q8_national_market_share.svg

This means that Reducer_4 in that can divvy up memory between these 
buffers up.

OrderedGroupedKVInputConfig::setShuffleBufferFraction() allows this 
particular tuning per input edge.

For a shuffle JOIN, you can tune the left and right hand side of the 
buffers, as well as make reservations for the actual map-join in memory, 
so that the plan's cost information can help  the memory scheduling Tez has.

Cheers,
Gopal

>
> [1] java.lang.OutOfMemoryError: Java heap space
> at
> org.apache.hadoop.io.BoundedByteArrayOutputStream.<init>(BoundedByteArrayOutputStream.java:56)
> at
> org.apache.hadoop.io.BoundedByteArrayOutputStream.<init>(BoundedByteArrayOutputStream.java:46)
> at
> org.apache.tez.runtime.library.common.shuffle.MemoryFetchedInput.<init>(MemoryFetchedInput.java:38)
> at
> org.apache.tez.runtime.library.common.shuffle.impl.SimpleFetchedInputAllocator.allocate(SimpleFetchedInputAllocator.java:139)
> at
> org.apache.tez.runtime.library.common.shuffle.Fetcher.fetchInputs(Fetcher.java:713)
> at
> org.apache.tez.runtime.library.common.shuffle.Fetcher.doHttpFetch(Fetcher.java:485)
> at
> org.apache.tez.runtime.library.common.shuffle.Fetcher.doHttpFetch(Fetcher.java:394)
> at
> org.apache.tez.runtime.library.common.shuffle.Fetcher.call(Fetcher.java:189)
> at
> org.apache.tez.runtime.library.common.shuffle.Fetcher.call(Fetcher.java:71)
> at java.util.concurrent.FutureTask.run(FutureTask.java:262)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:745)
>
> On Tue, Aug 26, 2014 at 4:26 PM, Suma Shivaprasad <
> sumasai.shivaprasad@gmail.com> wrote:
>
>> Am using Tez 0.4.0 and counters for the query run are as below
>>
>> 2014-08-26 14:06:41,203 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(171)) - org.apache.tez.common.counters.DAGCounter:
>> 2014-08-26 14:06:41,205 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(173)) -    NUM_FAILED_TASKS: 67
>> 2014-08-26 14:06:41,205 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(173)) -    NUM_KILLED_TASKS: 312
>> 2014-08-26 14:06:41,205 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(173)) -    TOTAL_LAUNCHED_TASKS: 259
>> 2014-08-26 14:06:41,205 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(173)) -    DATA_LOCAL_TASKS: 59
>> 2014-08-26 14:06:41,205 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(173)) -    RACK_LOCAL_TASKS: 27
>> 2014-08-26 14:06:41,207 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(171)) - File System Counters:
>> 2014-08-26 14:06:41,208 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(173)) -    FILE: BYTES_READ: 0
>> 2014-08-26 14:06:41,208 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(173)) -    FILE: BYTES_WRITTEN: 3201156949
>> 2014-08-26 14:06:41,208 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(173)) -    FILE: READ_OPS: 0
>> 2014-08-26 14:06:41,209 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(173)) -    FILE: LARGE_READ_OPS: 0
>> 2014-08-26 14:06:41,209 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(173)) -    FILE: WRITE_OPS: 0
>> 2014-08-26 14:06:41,209 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(173)) -    HDFS: BYTES_READ: 30052072845
>> 2014-08-26 14:06:41,209 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(173)) -    HDFS: BYTES_WRITTEN: 0
>> 2014-08-26 14:06:41,209 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(173)) -    HDFS: READ_OPS: 768
>> 2014-08-26 14:06:41,209 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(173)) -    HDFS: LARGE_READ_OPS: 0
>> 2014-08-26 14:06:41,209 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(173)) -    HDFS: WRITE_OPS: 0
>> 2014-08-26 14:06:41,211 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(171)) - org.apache.tez.common.counters.TaskCounter:
>> 2014-08-26 14:06:41,211 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(173)) -    GC_TIME_MILLIS: 148639
>> 2014-08-26 14:06:41,211 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(173)) -    CPU_MILLISECONDS: 1420020
>> 2014-08-26 14:06:41,211 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(173)) -    PHYSICAL_MEMORY_BYTES: 304725393408
>> 2014-08-26 14:06:41,211 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(173)) -    VIRTUAL_MEMORY_BYTES: 440084279296
>> 2014-08-26 14:06:41,212 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(173)) -    COMMITTED_HEAP_BYTES: 337806557184
>> 2014-08-26 14:06:41,212 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(173)) -    INPUT_RECORDS_PROCESSED: 722420718
>> 2014-08-26 14:06:41,212 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(173)) -    OUTPUT_RECORDS: 144488481
>> 2014-08-26 14:06:41,212 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(173)) -    OUTPUT_BYTES: 6876509984
>> 2014-08-26 14:06:41,212 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(173)) -    OUTPUT_BYTES_WITH_OVERHEAD: 7165487118
>> 2014-08-26 14:06:41,212 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(173)) -    OUTPUT_BYTES_PHYSICAL: 3201154197
>> 2014-08-26 14:06:41,212 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(171)) -
>> org.apache.hadoop.hive.ql.exec.FilterOperator$Counter:
>> 2014-08-26 14:06:41,212 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(173)) -    FILTERED: 863123081
>> 2014-08-26 14:06:41,212 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(173)) -    PASSED: 215782564
>> 2014-08-26 14:06:41,212 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(171)) -
>> org.apache.hadoop.hive.ql.exec.MapOperator$Counter:
>> 2014-08-26 14:06:41,212 INFO  [Thread-13]: exec.Task
>> (TezTask.java:execute(173)) -    DESERIALIZE_ERRORS: 0
>>
>> Thanks
>> Suma
>>
>>
>> On Tue, Aug 26, 2014 at 7:47 PM, Suma Shivaprasad <
>> sumasai.shivaprasad@gmail.com> wrote:
>>
>> > Trying to run a query on Tez with the following configurations
>> >
>> >
>> > *set hive.tez.container.size=5120*
>> > *set mapreduce.map.child.java.opts=-Xmx5120M*
>> > *set hive.tez.java.opts=-Xmx4096M*
>> > *set hive.auto.convert.join.noconditionaltask.size=805306000*
>> > *set tez.am.resource.memory.mb=5120*
>> > *set tez.am.java.opts=-Xmx4096M*
>> >
>> > The above config settings were set after  running
>> >
>> https://github.com/hortonworks/hdp-configuration-utils/blob/master/2.1/hdp-configuration-utils.py
>> > to get the right memory configs
>> >
>> > Tried with both
>> >
>> > set tez.runtime.io.sort.mb=512
>> > set mapreduce.task.io.sort.mb=512
>> >
>> > and
>> >
>> > set tez.runtime.io.sort.mb=2048
>> > set mapreduce.task.io.sort.mb=2048
>> >
>> >
>> > The query I am trying run is
>> >
>> > *select sum(tab1.m1),sum(tab1.m2)*
>> > * from tab1 join tab2 dm on tab1.col1=tab2.col1*
>> > * where tab1.dt = '2014-06-01' *
>> > * and tab2.col2 = '..'*
>> > * and tab2.col3 IN ('..')*
>> > * group by TAB1.col1*
>> >
>> > *where TAB1.col1 has high cardinality(around 700- 800 million)*
>> >
>> > And its going OOM during shuffle phase.
>> >
>> >  errorMessage=Fetch failed
>> > Container released by application,
>> > AttemptID:attempt_1407396011310_1577_1_01_000000_4 Info:Error:
>> > exceptionThrown=java.lang.OutOfMemoryError: Java heap space
>> >  at
>> >
>> org.apache.hadoop.io.BoundedByteArrayOutputStream.<init>(BoundedByteArrayOutputStream.java:56)
>> > at
>> >
>> org.apache.hadoop.io.BoundedByteArrayOutputStream.<init>(BoundedByteArrayOutputStream.java:46)
>> >  at
>> >
>> org.apache.tez.runtime.library.shuffle.common.MemoryFetchedInput.<init>(MemoryFetchedInput.java:38)
>> > at
>> >
>> org.apache.tez.runtime.library.shuffle.common.impl.SimpleFetchedInputAllocator.allocate(SimpleFetchedInputAllocator.java:137)
>> >  at
>> >
>> org.apache.tez.runtime.library.shuffle.common.Fetcher.fetchInputs(Fetcher.java:252)
>> > at
>> >
>> org.apache.tez.runtime.library.shuffle.common.Fetcher.call(Fetcher.java:184)
>> >  at
>> >
>> org.apache.tez.runtime.library.shuffle.common.Fetcher.call(Fetcher.java:59)
>> > at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
>> >  at java.util.concurrent.FutureTask.run(FutureTask.java:138)
>> > at
>> >
>> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>> >  at
>> >
>> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>> > at java.lang.Thread.run(Thread.java:662)
>> >
>> >
>> > Please advice if the configurations look ok? Do I need to change
>> anything?
>> >
>> >
>> >
>> > Thanks
>> > Suma
>> >
>> >
>> >
>>
>
>


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