Manuel Meßner created HIVE-9595:
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Summary: Test whether schema evolution using parquet is possible
Key: HIVE-9595
URL: https://issues.apache.org/jira/browse/HIVE-9595
Project: Hive
Issue Type: Test
Components: File Formats, Tests
Reporter: Manuel Meßner
Priority: Trivial
With https://issues.apache.org/jira/browse/HIVE-7554 a unfortunate else branch
was introduced to
org.apache.hadoop.hive.ql.io.parquet.read.DataWritableReadSupport . That else
branch fired an exception in case the parquet file schema had less fields than
the table schema. So adding columns to a parquet backed table and query the
added columns on old partitions wasn't possible anymore. Which was very
unfortunate for my team. https://issues.apache.org/jira/browse/HIVE-7800 fixed
that, see point 3 in Daniel Weeks' comment
https://issues.apache.org/jira/browse/HIVE-7800?focusedCommentId=14158594&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14158594
.
However Hive-7800 did not introduce a test case for that. I'd love to see one.
Best,
Manuel
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