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https://issues.apache.org/jira/browse/IGNITE-26983?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18042459#comment-18042459
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Vladislav Pyatkov commented on IGNITE-26983:
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Merged c32f509ec6e4dc7cb3c9febc4f3e3a6057528757
> Enrich possible deadlock log message with extra information
> -----------------------------------------------------------
>
> Key: IGNITE-26983
> URL: https://issues.apache.org/jira/browse/IGNITE-26983
> Project: Ignite
> Issue Type: Improvement
> Reporter: Mikhail Efremov
> Assignee: Mikhail Efremov
> Priority: Major
> Labels: ignite-3
> Time Spent: 1h 10m
> Remaining Estimate: 0h
>
> *Description*
> At the moment in case of potential deadlock situation we have such message:
> {code:java}
> java.util.concurrent.CompletionException:
> org.apache.ignite.tx.TransactionException: IGN-TX-4 Failed to acquire a lock
> due to a possible deadlock [locker=0198c472-5842-0004-bf35-349400000001,
> holder=0198c472-5833-0008-bf35-349400000001] TraceId:5928be7d
> {code}
> There are issues:
> # what exactly {{locker}} and {{holder}} there? (answer: transactions, the
> locker one is trying to get a lock, and the holder one that already acquired
> it, but it isn't obvious);
> # what UUID is there and how they could help us? (answer: TXs' IDs, but it
> still couldn't help us);
> # we don't know what operation faced with this issue (we can try to find it
> through a stacktrace, but code lines are diverging right along) not what type
> of lock was issued;
> # stacktrace itself is an issue, the message should be enough;
> There is a proposal to add to the log message the follow information:
> # lock type
> # operation type
> # resource type that is protected by the lock
> # change locker/holder names
> # remove stacktrace, just left the message
> *Motivation*
> We should make better and information rich logs in general and especially in
> potential huge issues like potential deadlock state.
> *Definition of done*
> Described improvements are applied to the log message.
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