Amazing how I missed the -Dcassandra.disable_stcs_in_l0=true option -
I have LeveledManifest source opened the whole day;-)
On Tue, Nov 18, 2014 at 9:15 PM, Andrei Ivanov wrote:
> Thanks a lot for your support, Marcus - that is useful beyond all
> recognition!;-) And I will try #6621 right away.
Thanks a lot for your support, Marcus - that is useful beyond all
recognition!;-) And I will try #6621 right away.
Sincerely, Andrei.
On Tue, Nov 18, 2014 at 8:50 PM, Marcus Eriksson wrote:
> you should stick to as small nodes as possible yes :)
>
> There are a few relevant tickets related to bo
you should stick to as small nodes as possible yes :)
There are a few relevant tickets related to bootstrap and LCS:
https://issues.apache.org/jira/browse/CASSANDRA-6621 - startup
with -Dcassandra.disable_stcs_in_l0=true to not do STCS in L0
https://issues.apache.org/jira/browse/CASSANDRA-7460 - (
OK, got it.
Actually, my problem is not that we constantly having many files at
L0. Normally, quite a few of them - that is, nodes are managing to
compact incoming writes in a timely manner.
But it looks like when we join a new node, it receives tons of files
from existing nodes (and they end up
No, they will get compacted into smaller sstables in L1+ eventually (once
you have less than 32 sstables in L0, an ordinary L0 -> L1 compaction will
happen)
But, if you consistently get many files in L0 it means that compaction is
not keeping up with your inserts and you should probably expand you
Marcus, thanks a lot! It explains a lot those huge tables are indeed at L0.
It seems that they start to appear as a result of some "massive"
operations (join, repair, rebuild). What's their fate in the future?
Will they continue to propagate like this through levels? Is there
anything that can be
I suspect they are getting size tiered in L0 - if you have too many
sstables in L0, we will do size tiered compaction on sstables in L0 to
improve performance
Use tools/bin/sstablemetadata to get the level for those sstables, if they
are in L0, that is probably the reason.
/Marcus
On Tue, Nov 18
