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https://issues.apache.org/jira/browse/KAFKA-13094?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Bruno Cadonna updated KAFKA-13094:
----------------------------------
Description:
Session windows use internally method {{maintainMs()}} to compute the retention
time for their changelog topic if users do not provide a retention time
explicitly with {{Materilaized}}. However, {{maintainMs()}} does not consider
user-specified grace period when computing the retention time.
The bug can be verified with the following test method:
{code:java}
@Test
public void
shouldUseGapAndGraceAsRetentionTimeIfBothCombinedAreLargerThanDefaultRetentionTime()
{
final Duration windowsSize = ofDays(1).minus(ofMillis(1));
final Duration gracePeriod = ofMillis(2);
assertEquals(windowsSize.toMillis() + gracePeriod.toMillis(),
SessionWindows.with(windowsSize).grace(gracePeriod).maintainMs());
}
{code}
The
was:
Session windows use internally method {{maintainMs()}} to compute the retention
time for their changelog topic if users do not provide a retention time
explicitly with {{Materilaized}}. However, {{maintainMs()}} does not consider
user-specified grace period when computing the retention time.
The bug can be verified with the following test method:
{code:java}
@Test
public void
shouldUseGapAndGraceAsRetentionTimeIfBothCombinedAreLargerThanDefaultRetentionTime()
{
final Duration windowsSize = ofDays(1).minus(ofMillis(1));
final Duration gracePeriod = ofMillis(2);
assertEquals(windowsSize.toMillis() + gracePeriod.toMillis(),
SessionWindows.with(windowsSize).grace(gracePeriod).maintainMs());
}
{code}
> Session windows do not consider user-specified grace when computing retention
> time for changelog
> ------------------------------------------------------------------------------------------------
>
> Key: KAFKA-13094
> URL: https://issues.apache.org/jira/browse/KAFKA-13094
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 2.8.0
> Reporter: Bruno Cadonna
> Priority: Major
>
> Session windows use internally method {{maintainMs()}} to compute the
> retention time for their changelog topic if users do not provide a retention
> time explicitly with {{Materilaized}}. However, {{maintainMs()}} does not
> consider user-specified grace period when computing the retention time.
> The bug can be verified with the following test method:
> {code:java}
> @Test
> public void
> shouldUseGapAndGraceAsRetentionTimeIfBothCombinedAreLargerThanDefaultRetentionTime()
> {
> final Duration windowsSize = ofDays(1).minus(ofMillis(1));
> final Duration gracePeriod = ofMillis(2);
> assertEquals(windowsSize.toMillis() + gracePeriod.toMillis(),
> SessionWindows.with(windowsSize).grace(gracePeriod).maintainMs());
> }
> {code}
> The
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