[jira] [Created] (SPARK-16528) HiveClientImpl throws NPE when reading database from a custom metastore

["Jacek Lewandowski (JIRA)" <ji...@apache.org>]

Jacek Lewandowski created SPARK-16528:
-----------------------------------------

             Summary: HiveClientImpl throws NPE when reading database from a custom metastore
                 Key: SPARK-16528
                 URL: https://issues.apache.org/jira/browse/SPARK-16528
             Project: Spark
          Issue Type: Bug
          Components: SQL
    Affects Versions: 2.0.0
            Reporter: Jacek Lewandowski


In _HiveClientImpl_ there is a method to create database:

{code}
  override def createDatabase(
      database: CatalogDatabase,
      ignoreIfExists: Boolean): Unit = withHiveState {
    client.createDatabase(
      new HiveDatabase(
        database.name,
        database.description,
        database.locationUri,
        database.properties.asJava),
        ignoreIfExists)
  }
{code}

The problem is that it assumes that {{database.properties}} is a not null value which is not always the truth. In fact, when the database is created, in _HiveMetaStore_ we have:

{code}
    private void createDefaultDB_core(RawStore ms) throws MetaException, InvalidObjectException {
      try {
        ms.getDatabase(DEFAULT_DATABASE_NAME);
      } catch (NoSuchObjectException e) {
        Database db = new Database(DEFAULT_DATABASE_NAME, DEFAULT_DATABASE_COMMENT,
          wh.getDefaultDatabasePath(DEFAULT_DATABASE_NAME).toString(), null);
        db.setOwnerName(PUBLIC);
        db.setOwnerType(PrincipalType.ROLE);
        ms.createDatabase(db);
      }
    }
{code}

As you can see, parameters field is set to {{null}}.




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