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https://issues.apache.org/jira/browse/HBASE-25576?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Toshihiro Suzuki updated HBASE-25576:
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Summary: Should not use a byte array as a key of HashMap or an element of
HashSet (was: Should not use HashMap (ConcurrentHashMap) or HashSet when using
byte[] as a key of Map or an element of Set)
> Should not use a byte array as a key of HashMap or an element of HashSet
> ------------------------------------------------------------------------
>
> Key: HBASE-25576
> URL: https://issues.apache.org/jira/browse/HBASE-25576
> Project: HBase
> Issue Type: Bug
> Reporter: Toshihiro Suzuki
> Assignee: Swaroopa Kadam
> Priority: Major
> Labels: beginner
>
> I sometimes face the code using HashMap (ConcurrentHashMap) or HashSet when
> using byte[] as a key of Map or an element of Set in the HBase code, which
> could cause very confusing bugs.
> We should use TreeMap (ConcurrentSkipListMap) or TreeSet
> (ConcurrentSkipListSet) with Bytes.BYTES_COMPARATOR when using byte[] as a
> key of Map or an element of Set as follows:
> {code}
> Map<byte[], String> map1 = new TreeMap<>(Bytes.BYTES_COMPARATOR);
> Map<byte[], String> map2 = new
> ConcurrentSkipListMap<>(Bytes.BYTES_COMPARATOR);
> Set<byte[]> set1 = new TreeSet<>(Bytes.BYTES_COMPARATOR);
> Set<byte[]> set2 = new ConcurrentSkipListSet<>(Bytes.BYTES_COMPARATOR);
> {code}
> We should fix the existing ones in this Jira.
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