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From "Aleksey Yeschenko (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-9672) Provide a per-table param that would force default ttl on all updates
Date Sun, 28 Jun 2015 21:13:04 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-9672?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Aleksey Yeschenko updated CASSANDRA-9672:
-----------------------------------------
    Description: 
Many users have tables that rely on TTL entirely - no deletes, and only fixed TTL value.

The way that default ttl works now, we only apply it if none is specified.

We should provide an option that would *enforce* the specified TTL. Not allowing ttl-less
{{INSERT}} or {{UPDATE}}, not allowing ttl that's lower or higher than the default ttl, and
not allowing deletes.

That option when enabled ({{force_default_ttl}}) should allow us to drop more tables during
compaction and do so cheaper. Would also allow the DBAs to enforce the constraint in a guaranteed
manner.

  was:
Many users have tables that don't rely on TTL entirely - no deletes, and only fixed TTL value.

The way that default ttl works now, we only apply it if none is specified.

We should provide an option that would *enforce* the specified TTL. Not allowing ttl-less
{{INSERT}} or {{UPDATE}}, not allowing ttl that's lower or higher than the default ttl, and
not allowing deletes.

That option when enabled ({{force_default_ttl}}) should allow us to drop more tables during
compaction and do so cheaper.


> Provide a per-table param that would force default ttl on all updates
> ---------------------------------------------------------------------
>
>                 Key: CASSANDRA-9672
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9672
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Aleksey Yeschenko
>            Priority: Minor
>
> Many users have tables that rely on TTL entirely - no deletes, and only fixed TTL value.
> The way that default ttl works now, we only apply it if none is specified.
> We should provide an option that would *enforce* the specified TTL. Not allowing ttl-less
{{INSERT}} or {{UPDATE}}, not allowing ttl that's lower or higher than the default ttl, and
not allowing deletes.
> That option when enabled ({{force_default_ttl}}) should allow us to drop more tables
during compaction and do so cheaper. Would also allow the DBAs to enforce the constraint in
a guaranteed manner.



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