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ASF GitHub Bot commented on DRILL-5851: --------------------------------------- Github user paul-rogers commented on a diff in the pull request: https://github.com/apache/drill/pull/1059#discussion_r155938551 --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/join/HashJoinBatch.java --- @@ -535,4 +537,25 @@ public void close() { } super.close(); } + + @Override + protected boolean checkForEarlyFinish() { + if (joinType == JoinRelType.INNER && + (leftUpstream == IterOutcome.NONE || rightUpstream == IterOutcome.NONE) || + joinType != JoinRelType.INNER && + (leftUpstream == IterOutcome.NONE && rightUpstream == IterOutcome.NONE)) { + return true; + } + return false; + } + + private boolean isFurtherProcessingRequired(IterOutcome upStream) { + if (upStream == IterOutcome.OUT_OF_MEMORY || + upStream == IterOutcome.NONE || + upStream == IterOutcome.NOT_YET || + upStream == IterOutcome.STOP) { + return false; + } + return true; --- End diff -- The classic way to do this would be: ``` return upStream == IterOutcome.OK || upStream == IterOutcome.OK_NEW_SCHEMA; ``` That is, express the return value as a Boolean expression. Also, identify the states that need processing, rather than those that don't. > 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 > > 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 (v6.4.14#64029)