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https://issues.apache.org/jira/browse/HIVE-14350?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eugene Koifman updated HIVE-14350:
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Description: this is a followup to HIVE-13369. Only open txns should
prevent use of a base file. But ValidTxnList does not make a distinction
between open and aborted txns. The presence of aborted txns causes false
positives which can happen too often since the flow is 1. Worker generates a
new base file, then asynchronously Cleaner removes now-compacted aborted txns.
So we may have base_5 and base_10 and txnid 7 aborted. Then current impl will
disallow use of base_10 though there is no need for that. Worse, if txnid_4 is
aborted and hasn't been purged yet, base_5 will be rejected as well and then an
error will be raised since there is no suitable base file left.
> Aborted txns cause false positive ErrorMsg.ACID_NOT_ENOUGH_HISTORY msgs
> -----------------------------------------------------------------------
>
> Key: HIVE-14350
> URL: https://issues.apache.org/jira/browse/HIVE-14350
> Project: Hive
> Issue Type: Bug
> Components: Transactions
> Affects Versions: 1.3.0, 2.1.1
> Reporter: Eugene Koifman
> Assignee: Eugene Koifman
> Priority: Critical
>
> this is a followup to HIVE-13369. Only open txns should prevent use of a
> base file. But ValidTxnList does not make a distinction between open and
> aborted txns. The presence of aborted txns causes false positives which can
> happen too often since the flow is 1. Worker generates a new base file, then
> asynchronously Cleaner removes now-compacted aborted txns. So we may have
> base_5 and base_10 and txnid 7 aborted. Then current impl will disallow use
> of base_10 though there is no need for that. Worse, if txnid_4 is aborted
> and hasn't been purged yet, base_5 will be rejected as well and then an error
> will be raised since there is no suitable base file left.
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