ANALYZE table COMPUTE STATISTICS for COLUMNS fails for partitioned tables

[#1]

SYMPTOM :

=> This problem occurs in case of a partitioned table without any null partitions and contains approximately more than 600 columns in the table

=> Following stacktrace is observed in hive metastore logs

Nested Throwables StackTrace:

org.datanucleus.store.rdbms.exceptions.MappedDatastoreException: INSERT INTO "PARTITION_PARAMS" ("PARAM_VALUE","PART_ID","PARAM_KEY") VALUES (?,?,?)

        at org.datanucleus.store.rdbms.scostore.JoinMapStore.internalPut(JoinMapStore.java:1056)

        at org.datanucleus.store.rdbms.scostore.JoinMapStore.put(JoinMapStore.java:307)

        at org.datanucleus.store.types.wrappers.backed.Map.put(Map.java:653)

        at org.apache.hadoop.hive.common.StatsSetupConst.setColumnStatsState(StatsSetupConst.java:285)

        at org.apache.hadoop.hive.metastore.ObjectStore.updatePartitionColumnStatistics(ObjectStore.java:6237)

        at sun.reflect.GeneratedMethodAccessor118.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.RawStoreProxy.invoke(RawStoreProxy.java:103)

        at com.sun.proxy.$Proxy10.updatePartitionColumnStatistics(Unknown Source)

        at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.updatePartitonColStats(HiveMetaStore.java:4596)

        at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.set_aggr_stats_for(HiveMetaStore.java:5953)

        at sun.reflect.GeneratedMethodAccessor117.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.RetryingHMSHandler.invokeInternal(RetryingHMSHandler.java:139)

        at org.apache.hadoop.hive.metastore.RetryingHMSHandler.invoke(RetryingHMSHandler.java:97)

        at com.sun.proxy.$Proxy12.set_aggr_stats_for(Unknown Source)

        at org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Processor$set_aggr_stats_for.getResult(ThriftHiveMetastore.java:11062)

        at org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Processor$set_aggr_stats_for.getResult(ThriftHiveMetastore.java:11046)

        at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:39)

        at org.apache.hadoop.hive.metastore.TUGIBasedProcessor$1.run(TUGIBasedProcessor.java:110)

        at org.apache.hadoop.hive.metastore.TUGIBasedProcessor$1.run(TUGIBasedProcessor.java:106)

        at java.security.AccessController.doPrivileged(Native Method)

        at javax.security.auth.Subject.doAs(Subject.java:422)

        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1724)

        at org.apache.hadoop.hive.metastore.TUGIBasedProcessor.process(TUGIBasedProcessor.java:118)

        at org.apache.thrift.server.TThreadPoolServer$WorkerProcess.run(TThreadPoolServer.java:286)

        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

        at java.lang.Thread.run(Thread.java:745)

Caused by: org.postgresql.util.PSQLException: ERROR: value too long for type character varying(4000)

        at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2157)

        at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1886)

        at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:255)

        at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:555)

        at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:417)

        at org.postgresql.jdbc2.AbstractJdbc2Statement.executeUpdate(AbstractJdbc2Statement.java:363)

        at com.jolbox.bonecp.PreparedStatementHandle.executeUpdate(PreparedStatementHandle.java:205)

        at org.datanucleus.store.rdbms.ParamLoggingPreparedStatement.executeUpdate(ParamLoggingPreparedStatement.java:393)

        at org.datanucleus.store.rdbms.SQLController.executeStatementUpdate(SQLController.java:431)

        at org.datanucleus.store.rdbms.scostore.JoinMapStore.internalPut(JoinMapStore.java:1047)

        ... 30 more

ROOT CAUSE:

=> Analyze table query updates the statistics in the metastore database

=> Metastore database has a limitation (4000) for the number of the characters that can be updated in the the PARTITION_PARAMS.PARAMS_VALUE

=> Hence, too many number of columns causes a limitation on the number of columns that can be updated

WORKAROUND:

Try increasing the column width for "PARTITION_PARAMS.PARAM_VALUE" column in metastore database.

STEPS:

1] Stop metastore/HS2

2] Back up the DB

3] Try to increase the column width to a reasonable value. In case of Postgres database use the following command,

ALTER TABLE PARTITION_PARAMS ALTER COLUMN PARAM_VALUE TYPE varchar(64000);

4] Start metastore/HS2 again.