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https://issues.apache.org/jira/browse/KAFKA-8750?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16900121#comment-16900121
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Alexandre Dupriez commented on KAFKA-8750:
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The waterfall is expected. If say, the remaining length is 3, in addition to
{{data[n-1]}}, you still need to process {{data[n-2]}} and {{data[n-3]}} to
calculate the hash.
> Utils#murmur2() method switch case block don't have break
> ---------------------------------------------------------
>
> Key: KAFKA-8750
> URL: https://issues.apache.org/jira/browse/KAFKA-8750
> Project: Kafka
> Issue Type: Bug
> Components: clients
> Reporter: yangkun
> Priority: Major
>
> Utils#murmur2() is as following, switch case block don't have break.
>
> {code:java}
> public static int murmur2(final byte[] data) {
> ...
> switch (length % 4) {
> case 3:
> h ^= (data[(length & ~3) + 2] & 0xff) << 16;
> // no break
> case 2:
> h ^= (data[(length & ~3) + 1] & 0xff) << 8;
> // no break
> case 1:
> h ^= data[length & ~3] & 0xff;
> h *= m;
> }
> ...
> return h;
> }
> {code}
>
>
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