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https://issues.apache.org/jira/browse/SPARK-22891?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16305862#comment-16305862
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Feng Liu commented on SPARK-22891:
----------------------------------
This is definitely caused by the race from
https://issues.apache.org/jira/browse/HIVE-11935.
In spark 2.1, spark creates the `metadataHive` lazily until
`addJar`(https://github.com/apache/spark/blob/branch-2.1/sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveSessionState.scala#L40),
so this can only be triggered by concurrent `addJar` (can't imagine this will
happen in practice)
In spark 2.2, the `metadataHive` creation is tied to the `resourceLoader` (see
the stack trace), so it starts to be triggered by new spark session creation.
In https://github.com/apache/spark/pull/20029, I'm trying to make an argument
that it is safe to remove the new hive client creation. Besides change, I think
should also make the hive client creation thread safe:
https://github.com/apache/spark/blob/master/sql/hive/src/main/scala/org/apache/spark/sql/hive/client/IsolatedClientLoader.scala#L251
> NullPointerException when use udf
> ---------------------------------
>
> Key: SPARK-22891
> URL: https://issues.apache.org/jira/browse/SPARK-22891
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.2.0, 2.2.1
> Environment: hadoop 2.7.2
> Reporter: gaoyang
> Priority: Minor
>
> In my application,i use multi threads. Each thread has a SparkSession and use
> SparkSession.sqlContext.udf.register to register my udf. Sometimes there
> throws exception like this:
> {code:java}
> java.lang.IllegalArgumentException: Error while instantiating
> 'org.apache.spark.sql.hive.HiveSessionStateBuilder':
> at
> org.apache.spark.sql.SparkSession$.org$apache$spark$sql$SparkSession$$instantiateSessionState(SparkSession.scala:1062)
> at
> org.apache.spark.sql.SparkSession$$anonfun$sessionState$2.apply(SparkSession.scala:137)
> at
> org.apache.spark.sql.SparkSession$$anonfun$sessionState$2.apply(SparkSession.scala:136)
> at scala.Option.getOrElse(Option.scala:121)
> at
> org.apache.spark.sql.SparkSession.sessionState$lzycompute(SparkSession.scala:136)
> at
> org.apache.spark.sql.SparkSession.sessionState(SparkSession.scala:133)
> at org.apache.spark.sql.SparkSession.udf(SparkSession.scala:207)
> at org.apache.spark.sql.SQLContext.udf(SQLContext.scala:203)
> at
> com.game.data.stat.clusterTask.tools.standard.IpConverterRegister$.run(IpConverterRegister.scala:63)
> at
> ... 20 more
> Caused by: java.lang.reflect.InvocationTargetException
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
> at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
> at
> org.apache.spark.sql.hive.client.IsolatedClientLoader.createClient(IsolatedClientLoader.scala:264)
> at
> org.apache.spark.sql.hive.client.HiveClientImpl.newSession(HiveClientImpl.scala:789)
> at
> org.apache.spark.sql.hive.client.HiveClientImpl.newSession(HiveClientImpl.scala:79)
> at
> org.apache.spark.sql.hive.HiveSessionStateBuilder.resourceLoader$lzycompute(HiveSessionStateBuilder.scala:45)
> at
> org.apache.spark.sql.hive.HiveSessionStateBuilder.resourceLoader(HiveSessionStateBuilder.scala:44)
> at
> org.apache.spark.sql.hive.HiveSessionStateBuilder.catalog$lzycompute(HiveSessionStateBuilder.scala:61)
> at
> org.apache.spark.sql.hive.HiveSessionStateBuilder.catalog(HiveSessionStateBuilder.scala:52)
> at
> org.apache.spark.sql.hive.HiveSessionStateBuilder.catalog(HiveSessionStateBuilder.scala:35)
> at
> org.apache.spark.sql.internal.BaseSessionStateBuilder.build(BaseSessionStateBuilder.scala:289)
> at
> org.apache.spark.sql.SparkSession$.org$apache$spark$sql$SparkSession$$instantiateSessionState(SparkSession.scala:1059)
> ... 20 more
> Caused by: java.lang.RuntimeException:
> org.apache.hadoop.hive.ql.metadata.HiveException
> at
> org.apache.hadoop.hive.ql.session.SessionState.setupAuth(SessionState.java:744)
> at
> org.apache.hadoop.hive.ql.session.SessionState.getAuthenticator(SessionState.java:1391)
> at
> org.apache.spark.sql.hive.client.HiveClientImpl.<init>(HiveClientImpl.scala:210)
> ... 34 more
> Caused by: org.apache.hadoop.hive.ql.metadata.HiveException
> at
> org.apache.hadoop.hive.ql.session.SessionState.setAuthorizerV2Config(SessionState.java:769)
> at
> org.apache.hadoop.hive.ql.session.SessionState.setupAuth(SessionState.java:736)
> ... 36 more
> Caused by: java.lang.NullPointerException
> at
> org.apache.hadoop.hive.metastore.HiveMetaStoreClient.isCompatibleWith(HiveMetaStoreClient.java:287)
> at sun.reflect.GeneratedMethodAccessor45.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at
> org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.invoke(RetryingMetaStoreClient.java:156)
> at com.sun.proxy.$Proxy25.isCompatibleWith(Unknown Source)
> at org.apache.hadoop.hive.ql.metadata.Hive.get(Hive.java:206)
> at
> org.apache.hadoop.hive.ql.session.SessionState.setAuthorizerV2Config(SessionState.java:765)
> ... 37 more
> {code}
> Also, i use apache hive 2.1.1 in my cluster.
> When i use spark 2.1.x, the exception above never happends again.
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