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  1. Apache Drill
  2. DRILL-487

Joining across different data sources throw 'schema change' exception

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      Description

      Cross data source queries are throwing exception. Examples include between a file and Hive table, a hive table and HBase table, 2 files of different formats.

      Here is a simple example. I will add more detailed log.

      select c.c_custkey from
      dfs.`/home/mapr/tpch/sf-0.1_tpc-h_DataParquet/customer.parquet` c,
      dfs.`/home/mapr/sample-data/userprofilejson/user1.json` u
      where c.c_custkey = u.id;

      user1.json is below.
      {
      "id":8362,
      "account":
      {
      "name":"Alice",
      "email":"Alice@gmail.com"
      },
      "address":
      {
      "street":"123 Ballmer Av",
      "zipcode":"12345",
      "state":"CA"
      }
      }

      Exception:
      message: "Screen received stop request sent. < SchemaChangeException:[ org.apache.drill.exec.exception.ClassTransformationException: Failure generating transformation classes for value: \n \npackage org.apache.drill.exec.test.generated;\n\nimport org.apache.drill.exec.exception.SchemaChangeException;\nimport org.apache.drill.exec.ops.FragmentContext;\nimport org.apache.drill.exec.physical.impl.join.JoinStatus;\nimport org.apache.drill.exec.record.RecordBatch;\nimport org.apache.drill.exec.record.VectorContainer;\nimport org.apache.drill.exec.vector.BigIntVector;\nimport org.apache.drill.exec.vector.Float8Vector;\nimport org.apache.drill.exec.vector.NullableBigIntVector;\nimport org.apache.drill.exec.vector.NullableIntVector;\nimport org.apache.drill.exec.vector.NullableVarCharVector;\nimport org.apache.drill.exec.vector.VarBinaryVector;\n\npublic class JoinWorkerGen141 {\n\n JoinStatus status;\n VectorContainer outgoing;\n

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            • Assignee:
              amansinha100 Aman Sinha
              Reporter:
              Neeraja Neeraja
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              • Created:
                Updated:
                Resolved: