There aren't any ERROR logs for failure to load these files and they do get 
compacted away. I'll try to plug some DEBUG logs in a custom Cassandra 
version.On Tuesday, August 1, 2017, 12:13:09 PM PDT, Jeff Jirsa 
<jji...@gmail.com> wrote:

I don't have time to dive deep into the code of your version, but it may be ( 
https://issues.apache.org/jira/browse/CASSANDRA-13620 ) , or it may be 
something else.
I wouldn't expect compaction to touch them if they're invalid. The handle may 
be a leftover from trying to load them. 


On Tue, Aug 1, 2017 at 10:01 AM, Sotirios Delimanolis 
<sotodel...@yahoo.com.invalid> wrote:

@Jeff, why does compaction clear them and why does Cassandra keep a handle to 
them? Shouldn't they be ignored entirely? Is there an error log I can enable to 
detect them?
@kurt, there are no such logs for any of these tables. We have a custom log in 
our build of Cassandra that does shows that compactions are happening for that 
table but only ever include the files from July.
On Tuesday, August 1, 2017, 12:55:53 AM PDT, kurt greaves 
<k...@instaclustr.com> wrote:

Seeing as there aren't even 100 SSTables in L2, LCS should be gradually trying 
to compact L3 with L2. You could search the logs for "Adding high-level (L3)" 
to check if this is happening. ​

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