Attila Doroszlai created HDDS-3118:
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Summary: Possible deadlock in LockManager
Key: HDDS-3118
URL: https://issues.apache.org/jira/browse/HDDS-3118
Project: Hadoop Distributed Data Store
Issue Type: Bug
Reporter: Attila Doroszlai
Attachments: repro.log, repro.patch
{{LockManager}} has a possible deadlock.
# Number of locks is limited by using a {{GenericObjectPool}}. If N locks are
already acquired, new requestors need to wait. This wait in
{{getLockForLocking}} happens in a callback executed from
{{ConcurrentHashMap#compute}} while holding a lock on a map entry.
# While releasing a lock, {{decrementActiveLockCount}} implicitly requires a
lock on an entry in {{ConcurrentHashMap}}.
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