Alexey Goncharuk created IGNITE-11750:
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Summary: Implement locked pages info for long-running B+Tree
operations
Key: IGNITE-11750
URL: https://issues.apache.org/jira/browse/IGNITE-11750
Project: Ignite
Issue Type: Improvement
Reporter: Alexey Goncharuk
I've stumbled upon an incident where a batch of Ignite threads were hanging on
BPlusTree operations trying to acquire read or write lock on pages. From the
thread dump it is impossible to check if there is an issue with
{{OffheapReadWriteLock}} or there is a subtle deadlock in the tree.
I suggest we implement a timeout for page lock acquire and tracking of locked
pages. This should be relatively easy to implement in {{PageHandler}} (the only
thing to consider is performance degradation). If a timeout occurs, we should
print all the locks currently owned by a thread. This way we should be able to
determine if there is a deadlock in the {{BPlusTree}}.
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