Mithun Radhakrishnan created HIVE-7891:
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Summary: Table-creation fails through HCatClient for Oracle-based
metastore.
Key: HIVE-7891
URL: https://issues.apache.org/jira/browse/HIVE-7891
Project: Hive
Issue Type: Bug
Components: HCatalog, Metastore
Affects Versions: 0.14.0
Reporter: Mithun Radhakrishnan
When tables are created using {{HCatClient.createTable()}}, if the HCatTable's
creation-comment is an empty string, the table creation fails spectacularly,
with this guttural utterance:
{noformat}
Exception in thread "main" org.apache.hive.hcatalog.common.HCatException : 9001
: Exception occurred while processing HCat request : MetaException while
creating table.. Cause : MetaException(message:java.lang.NullPointerException:
Null values not allowed in persistent maps.)
at
org.apache.hive.hcatalog.api.HCatClientHMSImpl.createTable(HCatClientHMSImpl.java:185)
at net.myth.HiveClient.main(HiveClient.java:67)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.apache.hadoop.util.RunJar.main(RunJar.java:208)
Caused by: MetaException(message:java.lang.NullPointerException: Null values
not allowed in persistent maps.)
at
org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$create_table_with_environment_context_result$create_table_with_environment_context_resultStandardScheme.read(ThriftHiveMetastore.java:22138)
at
org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$create_table_with_environment_context_result$create_table_with_environment_context_resultStandardScheme.read(ThriftHiveMetastore.java:22106)
at
org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$create_table_with_environment_context_result.read(ThriftHiveMetastore.java:22032)
at org.apache.thrift.TServiceClient.receiveBase(TServiceClient.java:78)
at
org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Client.recv_create_table_with_environment_context(ThriftHiveMetastore.java:797)
at
org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Client.create_table_with_environment_context(ThriftHiveMetastore.java:783)
at
org.apache.hadoop.hive.metastore.HiveMetaStoreClient.createTable(HiveMetaStoreClient.java:487)
at
org.apache.hadoop.hive.metastore.HiveMetaStoreClient.createTable(HiveMetaStoreClient.java:476)
at
org.apache.hive.hcatalog.api.HCatClientHMSImpl.createTable(HCatClientHMSImpl.java:175)
{noformat}
This manifests with an Oracle backend, because an empty comment-string is
stored in the table-properties map as a null-string. I've a patch that fixes
this.
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