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https://issues.apache.org/jira/browse/IGNITE-12646?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17036569#comment-17036569
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Andrey N. Gura commented on IGNITE-12646:
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[~sergey-chugunov]
{quote}
always catch RuntimeExceptions in GridToStringBuilder code but for every
exception of this type caught we include a clear warning message in prepared
String representation that should provide as much information as possible to
find and fix the original problem in code.
{quote}
Agree with you. It could be useful.
> When DEBUG mode is enabled GridToStringBuilder may throw
> java.util.ConcurrentModificationException
> --------------------------------------------------------------------------------------------------
>
> Key: IGNITE-12646
> URL: https://issues.apache.org/jira/browse/IGNITE-12646
> Project: Ignite
> Issue Type: Bug
> Reporter: Sergey Chugunov
> Assignee: Sergey Chugunov
> Priority: Major
> Fix For: 2.9
>
>
> With DEBUG enabled many components like CommunicationSPI start to log much
> larger chunks of information e.g. communication messages are logged as is.
> When big enough message with non-thread safe collection inside is logged by
> communication thread it is possible that some other thread started processing
> the same message. If processing involves modifying of the collection
> communication thread will get ConcurrentModificationException when in the
> middle of iterating over it.
> GridToStringBuilder should be safe from throwing this exception and
> (optionally) any type of RuntimeException.
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