Thank you for your response.
What subproperties do you mean specifically?
Currently, there are the following settings to ageressive purge.
AND COMPACTION = { 'class' : 'TimeWindowCompactionStrategy',
'compaction_window_unit' : 'HOURS', 'compaction_window_size' : 12,
'unchecked_tombstone_compaction': true, 'tombstone_threshold' : 0.05,
'tombstone_compaction_interval' : 21600 }
AND gc_grace_seconds = 600
Apache Cassandra Version 3.11.4
> 2020. 10. 29. 12:26, Jeff Jirsa <[email protected]> 작성:
>
> Works but requires you to enable tombstone compaction subproperties if you
> need to purge the 2w ttl data before the highest ttl time you chose
>
>> On Oct 28, 2020, at 5:58 PM, Eunsu Kim <[email protected]> wrote:
>>
>> Hello,
>>
>> I have a table with a default TTL(2w). I'm using TWCS(window size : 12h) on
>> the recommendation of experts. This table is quite big, high WPS.
>>
>> I would like to insert data different TTL from the default in this table
>> according to the type of data.
>> About four different TTLs (4w, 6w, 8w, 10w)
>>
>> ex.)
>> INSERT INTO my_table (…..) VALUES (….) USING TTL 4w
>>
>>
>> Could this cause performance problems or unexpected problems in the
>> compaction?
>>
>> Please give me advice,
>>
>> Thank you.
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