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https://issues.apache.org/jira/browse/FLINK-8037?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16313297#comment-16313297
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ASF GitHub Bot commented on FLINK-8037:
---------------------------------------

Github user StephanEwen commented on a diff in the pull request:

    https://github.com/apache/flink/pull/5205#discussion_r159899525
  
    --- Diff: flink-core/src/main/java/org/apache/flink/util/AbstractID.java ---
    @@ -186,7 +186,7 @@ private static long byteArrayToLong(byte[] ba, int 
offset) {
                long l = 0;
     
                for (int i = 0; i < SIZE_OF_LONG; ++i) {
    -                   l |= (ba[offset + SIZE_OF_LONG - 1 - i] & 0xffL) << (i 
<< 3);
    +                   l |= (ba[offset + SIZE_OF_LONG - 1 - i] & 0xffL) << 
((long) i << 3);
    --- End diff --
    
    I think this might be not quite right - the number of bits to shift stays 
below 64 and should be correct as an int.


> Missing cast in integer arithmetic in 
> TransactionalIdsGenerator#generateIdsToAbort
> ----------------------------------------------------------------------------------
>
>                 Key: FLINK-8037
>                 URL: https://issues.apache.org/jira/browse/FLINK-8037
>             Project: Flink
>          Issue Type: Bug
>            Reporter: Ted Yu
>            Assignee: Greg Hogan
>            Priority: Minor
>
> {code}
>   public Set<String> generateIdsToAbort() {
>     Set<String> idsToAbort = new HashSet<>();
>     for (int i = 0; i < safeScaleDownFactor; i++) {
>       idsToAbort.addAll(generateIdsToUse(i * poolSize * 
> totalNumberOfSubtasks));
> {code}
> The operands are integers where generateIdsToUse() expects long parameter.



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