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ASF GitHub Bot commented on DRILL-5851: --------------------------------------- Github user Ben-Zvi commented on a diff in the pull request: https://github.com/apache/drill/pull/1059#discussion_r163045737 --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/join/HashJoinProbeTemplate.java --- @@ -136,7 +136,9 @@ public void executeProbePhase() throws SchemaChangeException { case OK_NEW_SCHEMA: if (probeBatch.getSchema().equals(probeSchema)) { doSetup(outgoingJoinBatch.getContext(), buildBatch, probeBatch, outgoingJoinBatch); - hashTable.updateBatches(); + if (hashTable != null) { + hashTable.updateBatches(); + } --- End diff -- Fine. > Empty table during a join operation with a non empty table produces cast > exception > ----------------------------------------------------------------------------------- > > Key: DRILL-5851 > URL: https://issues.apache.org/jira/browse/DRILL-5851 > Project: Apache Drill > Issue Type: Bug > Components: Execution - Relational Operators > Affects Versions: 1.11.0 > Reporter: Hanumath Rao Maduri > Assignee: Hanumath Rao Maduri > Priority: Major > Fix For: 1.13.0 > > > Hash Join operation on tables with one table empty and the other non empty > throws an exception > {code} > Error: SYSTEM ERROR: DrillRuntimeException: Join only supports implicit casts > between 1. Numeric data > 2. Varchar, Varbinary data 3. Date, Timestamp data Left type: VARCHAR, Right > type: INT. Add explicit casts to avoid this error > {code} > Here is an example query with which it is reproducible. > {code} > select * from cp.`sample-data/nation.parquet` nation left outer join > dfs.tmp.`2.csv` as two on two.a = nation.`N_COMMENT`; > {code} > the contents of 2.csv is empty (i.e not even header info). -- This message was sent by Atlassian JIRA (v7.6.3#76005)