kaushik srinivas created SPARK-24249:
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Summary: Spark on kubernetes, pods crashes with spark sql job.
Key: SPARK-24249
URL: https://issues.apache.org/jira/browse/SPARK-24249
Project: Spark
Issue Type: Bug
Components: Kubernetes
Affects Versions: 2.2.0
Environment: Spark version : spark-2.2.0-k8s-0.5.0-bin-2.7.3
Kubernetes version : Kubernetes 1.9.7
Spark sql configuration :
Set 1 :
spark.executor.heartbeatInterval 20s
spark.executor.cores 4
spark.driver.cores 4
spark.driver.memory 15g
spark.executor.memory 15g
spark.cores.max 220
spark.rpc.numRetries 5
spark.rpc.retry.wait 5
spark.network.timeout 1800
spark.sql.broadcastTimeout 1200
spark.sql.crossJoin.enabled true
spark.sql.starJoinOptimization true
spark.eventLog.enabled true
spark.eventLog.dir hdfs://namenodeHA/tmp/spark-history
spark.sql.codegen true
spark.kubernetes.allocation.batch.size 30
Set 2 :
spark.executor.heartbeatInterval 20s
spark.executor.cores 4
spark.driver.cores 4
spark.driver.memory 11g
spark.driver.memoryOverhead 4g
spark.executor.memory 11g
spark.executor.memoryOverhead 4g
spark.cores.max 220
spark.rpc.numRetries 5
spark.rpc.retry.wait 5
spark.network.timeout 1800
spark.sql.broadcastTimeout 1200
spark.sql.crossJoin.enabled true
spark.sql.starJoinOptimization true
spark.eventLog.enabled true
spark.eventLog.dir hdfs://namenodeHA/tmp/spark-history
spark.sql.codegen true
spark.kubernetes.allocation.batch.size 30
Kryoserialiser is being used and with "spark.kryoserializer.buffer.mb" value of
64mb.
50 executors are being spawned using spark.executor.instances=50 submit
argument.
Reporter: kaushik srinivas
Below is the scenario being tested,
Job :
Spark sql job is written in scala, and to run on 1TB TPCDS BENCHMARK DATA which
is in parquet,snappy format and hive tables created on top of it.
Cluster manager :
Kubernetes
Spark sql configuration :
Set 1 :
spark.executor.heartbeatInterval 20s
spark.executor.cores 4
spark.driver.cores 4
spark.driver.memory 15g
spark.executor.memory 15g
spark.cores.max 220
spark.rpc.numRetries 5
spark.rpc.retry.wait 5
spark.network.timeout 1800
spark.sql.broadcastTimeout 1200
spark.sql.crossJoin.enabled true
spark.sql.starJoinOptimization true
spark.eventLog.enabled true
spark.eventLog.dir hdfs://namenodeHA/tmp/spark-history
spark.sql.codegen true
spark.kubernetes.allocation.batch.size 30
Set 2 :
spark.executor.heartbeatInterval 20s
spark.executor.cores 4
spark.driver.cores 4
spark.driver.memory 11g
spark.driver.memoryOverhead 4g
spark.executor.memory 11g
spark.executor.memoryOverhead 4g
spark.cores.max 220
spark.rpc.numRetries 5
spark.rpc.retry.wait 5
spark.network.timeout 1800
spark.sql.broadcastTimeout 1200
spark.sql.crossJoin.enabled true
spark.sql.starJoinOptimization true
spark.eventLog.enabled true
spark.eventLog.dir hdfs://namenodeHA/tmp/spark-history
spark.sql.codegen true
spark.kubernetes.allocation.batch.size 30
Kryoserialiser is being used and with "spark.kryoserializer.buffer.mb" value of
64mb.
50 executors are being spawned using spark.executor.instances=50 submit
argument.
Issues Observed:
Spark sql job is terminating abruptly and the drivers,executors are being
killed randomly.
driver and executors pods gets killed suddenly the job fails.
Few different stack traces are found across different runs,
Stack Trace 1:
"2018-05-10 06:31:28 ERROR ContextCleaner:91 - Error cleaning broadcast 136
org.apache.spark.SparkException: Exception thrown in awaitResult:
at org.apache.spark.util.ThreadUtils$.awaitResult(ThreadUtils.scala:205)"
File attached : StackTrace1.txt
Stack Trace 2:
"org.apache.spark.shuffle.FetchFailedException: Failed to connect to
/192.178.1.105:38039^M
at
org.apache.spark.storage.ShuffleBlockFetcherIterator.throwFetchFailedException(ShuffleBlockFetcherIterator.scala:442)^M
at
org.apache.spark.storage.ShuffleBlockFetcherIterator.next(ShuffleBlockFetcherIterator.scala:418)"
File attached : StackTrace2.txt
Stack Trace 3:
"18/05/10 11:21:17 WARN KubernetesTaskSetManager: Lost task 3.0 in stage 48.0
(TID 16486, 192.178.1.35, executor 41): FetchFailed(null, shuffleId=29,
mapId=-1, reduceId=3, message=^M
org.apache.spark.shuffle.MetadataFetchFailedException: Missing an output
location for shuffle 29^M
at
org.apache.spark.MapOutputTracker$$anonfun$org$apache$spark$MapOutputTracker$$convertMapStatuses$2.apply(MapOutputTracker.scala:697)^M
at
org.apache.spark.MapOutputTracker$$anonfun$org$apache$spark$MapOutputTracker$$convertMapStatuses$2.apply(MapOutputTracker.scala:693)"
File attached : StackTrace3.txt
Stack Trace 4:
"ERROR KubernetesTaskSchedulerImpl: Lost executor 11 on 192.178.1.123: Executor
lost for unknown reasons."
This is repeating constantly until the executors are dead completely without
any stack traces.
Also, we see 18/05/11 07:23:23 INFO DAGScheduler: failed: Set()
what does this mean ? anything is wrong or it says failed set is empty that
means no failure ?
Observations or changes tried out :
> Monitored memory and CPU utilisation across executors and none of them are
> hitting the limits.
> As per few readings and suggestions
spark.network.timeout was increased to 1800 from 600, but did not help.
> Also, driver and executor memory overhead was kept default in set 1 of the
> config and it was 0.1*15g=1.5gb.
Increased this value also, explicitly to 4gb and reduced driver and executor
memory values to 11gb from 15gb as per set 2.
this did not yield any valuable results, same failures are being observed.
SparkSql is being used to run the queries,
sample code lines :
val qresult = spark.sql(q)
qresult.show()
No manual repartitioning is being done in the code.
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