Prabhu Joseph created SPARK-24008:
-------------------------------------
Summary: SQL/Hive Context fails with NullPointerException
Key: SPARK-24008
URL: https://issues.apache.org/jira/browse/SPARK-24008
Project: Spark
Issue Type: Bug
Components: Spark Core
Affects Versions: 1.6.3
Reporter: Prabhu Joseph
SQL / Hive Context fails with NullPointerException while getting configuration
from SQLConf. This happens when the MemoryStore is filled with lot of broadcast
and started dropping and then SQL / Hive Context is created and broadcast. When
using this Context to access a table fails with below NullPointerException.
Repro is attached - the Spark Example which fills the MemoryStore with
broadcasts and then creates and accesses a SQL Context.
{code}
java.lang.NullPointerException
at org.apache.spark.sql.SQLConf.getConf(SQLConf.scala:638)
at org.apache.spark.sql.SQLConf.defaultDataSourceName(SQLConf.scala:558)
at
org.apache.spark.sql.DataFrameReader.<init>(DataFrameReader.scala:362)
at org.apache.spark.sql.SQLContext.read(SQLContext.scala:623)
at SparkHiveExample$.main(SparkHiveExample.scala:76)
at SparkHiveExample.main(SparkHiveExample.scala)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
18/04/06 14:17:42 ERROR ApplicationMaster: User class threw exception:
java.lang.NullPointerException
java.lang.NullPointerException
at org.apache.spark.sql.SQLConf.getConf(SQLConf.scala:638)
at org.apache.spark.sql.SQLContext.getConf(SQLContext.scala:153)
at
org.apache.spark.sql.hive.HiveContext.hiveMetastoreVersion(HiveContext.scala:166)
at
org.apache.spark.sql.hive.HiveContext.metadataHive$lzycompute(HiveContext.scala:258)
at org.apache.spark.sql.hive.HiveContext.metadataHive(HiveContext.scala:255)
at org.apache.spark.sql.hive.HiveContext$$anon$2.<init>(HiveContext.scala:475)
at
org.apache.spark.sql.hive.HiveContext.catalog$lzycompute(HiveContext.scala:475)
at org.apache.spark.sql.hive.HiveContext.catalog(HiveContext.scala:474)
at org.apache.spark.sql.hive.HiveContext.catalog(HiveContext.scala:90)
at org.apache.spark.sql.SQLContext.table(SQLContext.scala:831)
at org.apache.spark.sql.SQLContext.table(SQLContext.scala:827)
{code}
MemoryStore got filled and started dropping the blocks.
{code}
18/04/17 08:03:43 INFO MemoryStore: 2 blocks selected for dropping
18/04/17 08:03:43 INFO MemoryStore: Block broadcast_14 stored as values in
memory (estimated size 78.1 MB, free 64.4 MB)
18/04/17 08:03:43 INFO MemoryStore: Block broadcast_14_piece0 stored as bytes
in memory (estimated size 1522.0 B, free 64.4 MB)
18/04/17 08:03:43 INFO MemoryStore: Block broadcast_15 stored as values in
memory (estimated size 350.9 KB, free 64.1 MB)
18/04/17 08:03:43 INFO MemoryStore: Block broadcast_15_piece0 stored as bytes
in memory (estimated size 29.9 KB, free 64.0 MB)
18/04/17 08:03:43 INFO MemoryStore: 10 blocks selected for dropping
18/04/17 08:03:43 INFO MemoryStore: Block broadcast_16 stored as values in
memory (estimated size 78.1 MB, free 64.7 MB)
18/04/17 08:03:43 INFO MemoryStore: Block broadcast_16_piece0 stored as bytes
in memory (estimated size 1522.0 B, free 64.7 MB)
18/04/17 08:03:43 INFO MemoryStore: Block broadcast_1 stored as values in
memory (estimated size 136.0 B, free 64.7 MB)
18/04/17 08:03:44 INFO MemoryStore: MemoryStore cleared
18/04/17 08:03:20 INFO MemoryStore: MemoryStore started with capacity 511.1 MB
18/04/17 08:03:44 INFO MemoryStore: MemoryStore cleared
18/04/17 08:03:57 INFO MemoryStore: MemoryStore started with capacity 511.1 MB
18/04/17 08:04:23 INFO MemoryStore: MemoryStore cleared
{code}
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