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https://issues.apache.org/jira/browse/IGNITE-602?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16012806#comment-16012806
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Andrey Gura edited comment on IGNITE-602 at 5/16/17 5:50 PM:
-------------------------------------------------------------

[~SomeFire], I don't like that for every reference type instance 
{{ObjectWithPosition}} object will be created. It creates additional redundant 
pressure to GC. Also it seems that list is inappropriate data structure for 
reference tracking because it requires {{O(n)}} operation in order to check 
whether object is saved or not. It seems that {{IdentityHashMap}} is better 
choice for this purpose.


was (Author: agura):
[~SomeFire], I don't like that for every reference type instance 
{{ObjectWithPosition}} object will be created. It creates additional redundant 
pressure to GC. Also it seems that list is inappropriate data structure for 
reference tracking because it requires O(n) operation in order to check whether 
object is saved or not. It seems that {{IdentityHashMap}} is better choice for 
this purpose.

> [Test] GridToStringBuilder is vulnerable for StackOverflowError caused by 
> infinite recursion
> --------------------------------------------------------------------------------------------
>
>                 Key: IGNITE-602
>                 URL: https://issues.apache.org/jira/browse/IGNITE-602
>             Project: Ignite
>          Issue Type: Bug
>          Components: general
>            Reporter: Artem Shutak
>            Assignee: Ryabov Dmitrii
>              Labels: Muted_test
>             Fix For: 2.1
>
>
> See test 
> org.gridgain.grid.util.tostring.GridToStringBuilderSelfTest#_testToStringCheckAdvancedRecursionPrevention
>  and related TODO in same source file.
> Also take a look at 
> http://stackoverflow.com/questions/11300203/most-efficient-way-to-prevent-an-infinite-recursion-in-tostring
> Test should be unmuted on TC after fix.
> see GG-5000.



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