Andrew Medvedev created IGNITE-9235:
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Summary: Transitivity violation in GridMergeIndex Comparator
Key: IGNITE-9235
URL: https://issues.apache.org/jira/browse/IGNITE-9235
Project: Ignite
Issue Type: Bug
Affects Versions: 2.5
Reporter: Andrew Medvedev
Currently comparator is
private final Comparator<RowStream> streamCmp = new Comparator<RowStream>() {
@Override public int compare(RowStream o1, RowStream o2) {
// Nulls at the beginning.
if (o1 == null)
return -1;
if (o2 == null)
return 1;
return compareRows(o1.get(), o2.get());
}
};
This comparator violates transitivity when both RowStream are null. Thus we get
excetption in JDK1.8:
WA: use -Djava.util.Arrays.useLegacyMergeSort=true
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