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https://issues.apache.org/jira/browse/KAFKA-4920?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16377724#comment-16377724
]
ASF GitHub Bot commented on KAFKA-4920:
---------------------------------------
guozhangwang closed pull request #4622: KAFKA-4920: Stamped implements equals
URL: https://github.com/apache/kafka/pull/4622
This is a PR merged from a forked repository.
As GitHub hides the original diff on merge, it is displayed below for
the sake of provenance:
As this is a foreign pull request (from a fork), the diff is supplied
below (as it won't show otherwise due to GitHub magic):
diff --git a/gradle/findbugs-exclude.xml b/gradle/findbugs-exclude.xml
index 33702056d83..662864c8c73 100644
--- a/gradle/findbugs-exclude.xml
+++ b/gradle/findbugs-exclude.xml
@@ -241,12 +241,6 @@ For a detailed description of findbugs bug categories, see
http://findbugs.sourc
<Bug pattern="IS2_INCONSISTENT_SYNC"/>
</Match>
- <Match>
- <!-- Suppress warnings about implementing compareTo but not equals. -->
- <Class name="org.apache.kafka.streams.processor.internals.Stamped"/>
- <Bug pattern="EQ_COMPARETO_USE_OBJECT_EQUALS"/>
- </Match>
-
<Match>
<!-- TODO: fix this (see KAFKA-4996) -->
<Or>
diff --git
a/streams/src/main/java/org/apache/kafka/streams/processor/internals/Stamped.java
b/streams/src/main/java/org/apache/kafka/streams/processor/internals/Stamped.java
index 4965238e856..4452a9b9a92 100644
---
a/streams/src/main/java/org/apache/kafka/streams/processor/internals/Stamped.java
+++
b/streams/src/main/java/org/apache/kafka/streams/processor/internals/Stamped.java
@@ -34,4 +34,19 @@ public int compareTo(Object other) {
else if (timestamp > otherTimestamp) return 1;
return 0;
}
+
+ @Override
+ public boolean equals(Object o) {
+ if (this == o) return true;
+ if (o == null || getClass() != o.getClass()) return false;
+
+ // we do not compare values for this stamped object
+ return this.compareTo(o) == 0;
+ }
+
+ @Override
+ public int hashCode() {
+ // we do not use values for this object's hashcode
+ return (int) (timestamp ^ (timestamp >>> 32));
+ }
}
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> Stamped should implement equals
> -------------------------------
>
> Key: KAFKA-4920
> URL: https://issues.apache.org/jira/browse/KAFKA-4920
> Project: Kafka
> Issue Type: Improvement
> Components: streams
> Reporter: Marc Juchli
> Priority: Minor
>
> We ran FundBug, which resulted in the "Bad practice warning":
> Bug type EQ_COMPARETO_USE_OBJECT_EQUALS (click for details)
> In class org.apache.kafka.streams.processor.internals.Stamped
> In method
> org.apache.kafka.streams.processor.internals.Stamped.compareTo(Object)
> At Stamped.java:[lines 31-35]
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