Vaibhav Gumashta created HIVE-21460:
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Summary: ACID: Load data followed by a select * query results in
incorrect results
Key: HIVE-21460
URL: https://issues.apache.org/jira/browse/HIVE-21460
Project: Hive
Issue Type: Bug
Components: Transactions
Affects Versions: 3.1.1
Reporter: Vaibhav Gumashta
This affects current master as well. Created an orc file such that it spans
multiple stripes and ran a simple select *, and got incorrect row counts (when
comparing with select count(*). The problem seems to be that after split
generation and creating min/max rowId for each row (note that since the loaded
file is not written by Hive ACID, it does not have ROW__ID in the file; but the
ROW__ID is applied on read by discovering min/max bounds which are used for
calculating ROW__ID.rowId for each row of a split), Hive is only reading the
last split.
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