Gopal V created HIVE-18494:
------------------------------
Summary: Regression: from HIVE-18069, the metastore directsql is
getting disabled
Key: HIVE-18494
URL: https://issues.apache.org/jira/browse/HIVE-18494
Project: Hive
Issue Type: Bug
Reporter: Gopal V
{code:java}
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]
{code}
The DataNucleus layer returns List<String> for this case, when exactly one
column has been selected.
And MetastoreDirectSQL is disabled for all further queries.
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