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https://issues.apache.org/jira/browse/FLINK-15621?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17049398#comment-17049398
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Arujit Pradhan commented on FLINK-15621:
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 Hi [~azagrebin],

I have a doubt while implementing this story. Basically I was trying to find 
the piece of code which enables  `*ttlCompactionFilter*` to true by default. (I 
can see the default value set to true in config), but I know we have to remove 
that configuration altogether. I thought you would be setting that in rocks DB 
or something, but could not find the implementation. Initially, I assumed that 
its just deprecation code removal, but I am unable to find where are you 
enabling compaction filter. And when I just removed the deprecated code 
(thinking it was set by default somewhere) all tests in 
*{color:#172b4d}RocksDBTtlStateTestBase 
{color}* {color:#172b4d} are failing{color}. I know this is a trivial doubt. 
But it would be really great if you can please help me here. I am new to 
opensource and flink all together and it will help me in my first opensource 
contribution.

{color:#50fa7b} {color}

> State TTL: Remove deprecated option and method to disable TTL compaction 
> filter
> -------------------------------------------------------------------------------
>
>                 Key: FLINK-15621
>                 URL: https://issues.apache.org/jira/browse/FLINK-15621
>             Project: Flink
>          Issue Type: Task
>          Components: Runtime / State Backends
>            Reporter: Andrey Zagrebin
>            Assignee: Arujit Pradhan
>            Priority: Blocker
>             Fix For: 1.11.0
>
>
> Follow-up for FLINK-15506.
>  * Remove RocksDBOptions#TTL_COMPACT_FILTER_ENABLED
>  * Remove 
> RocksDBStateBackend#enableTtlCompactionFilter/isTtlCompactionFilterEnabled/disableTtlCompactionFilter,
>  also in python API
>  * Cleanup code from this flag and tests, also in python API
>  * Check any related code in 
> [frocksdb|https://github.com/dataArtisans/frocksdb] if any



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