Details
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Bug
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Status: Closed
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Major
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Resolution: Fixed
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None
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None
Description
018-01-19T02:12:34,457 WARN [pool-10-thread-1] metastore.ObjectStore: Falling back to ORM path due to direct SQL failure (this is not an error): java.lang.String cannot be cast to [Ljava.lang.Object; at org.apache.hadoop.hive.metastore.MetaStoreDirectSql.getTables(MetaStoreDirectSql.java:412) at org.apache.hadoop.hive.metastore.ObjectStore$2.getSqlResult(ObjectStore.java:1336) 2018-01-19T02:12:34,457 DEBUG [pool-10-thread-1] metastore.ObjectStore: Full DirectSQL callstack for debugging (note: this is not an error) java.lang.ClassCastException: java.lang.String cannot be cast to [Ljava.lang.Object; at org.apache.hadoop.hive.metastore.MetaStoreDirectSql.getTables(MetaStoreDirectSql.java:412) ~[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT] at org.apache.hadoop.hive.metastore.ObjectStore$2.getSqlResult(ObjectStore.java:1336) ~[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT] at org.apache.hadoop.hive.metastore.ObjectStore$2.getSqlResult(ObjectStore.java:1332) ~[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT] at org.apache.hadoop.hive.metastore.ObjectStore$GetHelper.run(ObjectStore.java:3200) ~[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT] at org.apache.hadoop.hive.metastore.ObjectStore.getTablesInternal(ObjectStore.java:1344) ~[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT] at org.apache.hadoop.hive.metastore.ObjectStore.getTables(ObjectStore.java:1323) ~[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT]
The DataNucleus layer returns List<String> for this case, when exactly one column has been selected.
And MetastoreDirectSQL is disabled for all further queries.