Elliot West created HIVE-12202:
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Summary: NPE thrown when reading legacy ACID delta files
Key: HIVE-12202
URL: https://issues.apache.org/jira/browse/HIVE-12202
Project: Hive
Issue Type: Bug
Components: Transactions
Affects Versions: 1.3.0
Reporter: Elliot West
Assignee: Elliot West
When reading legacy ACID deltas of the form {{delta_$startTxnId_$endTxnId}} a
{{NullPointerException}} is thrown on:
{code:title=org.apache.hadoop.hive.ql.io.AcidUtils.deserializeDeltas#371}
if(dmd.getStmtIds().isEmpty()) {
{code}
The older ACID data format (pre-Hive 1.3.0) which does not include the
statement ID, and code written for that format should still be supported.
Therefore the above condition should also include a null check or alternatively
{{AcidInputFormat.DeltaMetaData}} should never return null, and return an empty
list in this specific scenario.
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