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Posted to dev@hbase.apache.org by "stack (JIRA)" <ji...@apache.org> on 2018/08/21 05:22:00 UTC

[jira] [Created] (HBASE-21080) Collectors.toMap uses a byte [] for key

stack created HBASE-21080:
-----------------------------

             Summary: Collectors.toMap uses a byte [] for key
                 Key: HBASE-21080
                 URL: https://issues.apache.org/jira/browse/HBASE-21080
             Project: HBase
          Issue Type: Bug
            Reporter: stack


Good one found by a jxray spelunking [~misha@cloudera.com].

The below added by HBASE-19496 is making hashmaps with byte []s for keys (byte []'s don't do hashCode/Equals; usually when we have byte []'s for keys, we do ConcurrentMap and pass a Comparator in constructor that knows how to do byte []s).

{code}
.setStoreSequenceIds(regionLoadPB.getStoreCompleteSequenceIdList().stream()
  .collect(Collectors.toMap(
    (ClusterStatusProtos.StoreSequenceId s) -> s.getFamilyName().toByteArray(),
      ClusterStatusProtos.StoreSequenceId::getSequenceId)))
{code}





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