[
https://issues.apache.org/jira/browse/FLINK-40339?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
ASF GitHub Bot updated FLINK-40339:
-----------------------------------
Labels: pull-request-available (was: )
> WatermarkCompactingSinkMaterializer reads MapState entries after removing them
> ------------------------------------------------------------------------------
>
> Key: FLINK-40339
> URL: https://issues.apache.org/jira/browse/FLINK-40339
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / API
> Affects Versions: 2.3.0
> Reporter: Gustavo de Morais
> Assignee: Gustavo de Morais
> Priority: Major
> Labels: pull-request-available
>
> consolidateBufferToMinValue collects Map.Entry instances from the buffer
> MapState, removes each one through the iterator, and only then calls
> getValue() on them:
> {code:java}
> entries.add(iterator.next());
> iterator.remove();
> ...
> for (Map.Entry<Long, List<RowData>> entry : entries) {
> final List<RowData> values = entry.getValue(); {code}
> The value of a Map.Entry is undefined once the entry has been removed. The
> heap backend happens to keep it readable, so this works by accident; a
> backend that invalidates removed entries returns null and consolidation fails
> with a NullPointerException on restore.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
