[jira] [Commented] (IGNITE-15744) Incorrect vartable compaction to TINY format.

["Yury Gerzhedovich (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IGNITE-15744?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17435854#comment-17435854 ] 

Yury Gerzhedovich commented on IGNITE-15744:
--------------------------------------------

[~amashenkov], LGTM. Thanks for the fix.

> Incorrect vartable compaction to TINY format.
> ---------------------------------------------
>
>                 Key: IGNITE-15744
>                 URL: https://issues.apache.org/jira/browse/IGNITE-15744
>             Project: Ignite
>          Issue Type: Bug
>          Components: sql
>    Affects Versions: 3.0.0-alpha2
>            Reporter: Andrey Mashenkov
>            Assignee: Andrey Mashenkov
>            Priority: Major
>              Labels: iep-54, ignite-3
>             Fix For: 3.0.0-alpha4
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> Var-table compaction may lead to row data corruption when {{TINY}} format is selected
> in case of 256+ empty (not null) varlen fields.
> {{TINY}} format will be selected in this case, because payload size fit to a single byte, 
> however, the size of vartable will be truncated{{ int->byte}} with overflow. 
> Possible fixes are:
> * switch to {{MEDIUM}} format
> * always use {{short}} for vartable size



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