Tamas Mate created IMPALA-9732:
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Summary: Improve exceptions of unsupported HdfsTableSink formats
Key: IMPALA-9732
URL: https://issues.apache.org/jira/browse/IMPALA-9732
Project: IMPALA
Issue Type: Improvement
Components: Frontend
Affects Versions: Impala 3.4.0
Reporter: Tamas Mate
Assignee: Tamas Mate
For unsupported table writes an IllegalStateException is thrown during planning
[here|https://github.com/apache/impala/blame/e46bbf29d43f1d3b118933d06c63ceb135beaf9c/fe/src/main/java/org/apache/impala/planner/HdfsTableSink.java#L144]:
{code:java}
Preconditions.checkState(false, "Unsupported TableSink format(s): " +
Joiner.on(',').join(unsupportedFormats));
{code}
This exception could be improved by changing the IllegalStateException to a
more meaningful one and the "TableSink format" to a term which is familiar for
the users.
Additionally, the exception is thrown generally when a table has a partition
with unsupported format, dynamic partitioning is not taken into consideration.
The check could be extended to only throw exception when the partition that is
being written is unsupported.
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