BsoBird commented on code in PR #4935:
URL: https://github.com/apache/hive/pull/4935#discussion_r1421772053
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ql/src/java/org/apache/hadoop/hive/ql/exec/tez/SplitGrouper.java:
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@@ -71,7 +71,7 @@ public class SplitGrouper {
// TODO This needs to be looked at. Map of Map to Map... Made concurrent for
now since split generation
// can happen in parallel.
- private static final Map<Map<Path, PartitionDesc>, Map<Path, PartitionDesc>>
cache =
+ private final Map<Map<Path, PartitionDesc>, Map<Path, PartitionDesc>> cache =
Review Comment:
Furthermore, if you follow the original definition, there is a high
probability of deadlocks when multiple threads access the cache at the same
time.
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