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Date: Tue, 10 Apr 2012 13:27:33 +0900
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 <CALqbeQaoHfehvLxDVSOC_E+wQ=WG4LYNiKjiMTjzq38KrVHU5Q@mail.gmail.com>
Subject: Re: leveled compaction - improve log message
From: Maki Watanabe <watanabe.maki@gmail.com>
To: user@cassandra.apache.org
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for details, open conf/log4j-server.properties and add following configurat=
ion:

log4j.logger.org.apache.cassandra.db.compaction.LeveledManifest=3DDEBUG

fyi.

maki


2012/4/10 Jonathan Ellis <jbellis@gmail.com>:
> CompactionExecutor doesn't have level information available to it; it
> just compacts the sstables it's told to. =C2=A0But if you enable debug
> logging on LeveledManifest you'd see what you want. =C2=A0("Compaction
> candidates for L{} are {}")
>
> 2012/4/5 Radim Kolar <hsn@filez.com>:
>> it would be really helpfull if leveled compaction prints level into sysl=
og.
>>
>> Demo:
>>
>> INFO [CompactionExecutor:891] 2012-04-05 22:39:27,043 CompactionTask.jav=
a
>> (line 113) Compacting ***LEVEL 1***
>> [SSTableReader(path=3D'/var/lib/cassandra/data/rapidshare/querycache-hc-=
19690-Data.db'),
>> SSTableReader(path=3D'/var/lib/cassandra/data/rapidshare/querycache-hc-1=
9688-Data.db'),
>> SSTableReader(path=3D'/var/lib/cassandra/data/rapidshare/querycache-hc-1=
9691-Data.db'),
>> SSTableReader(path=3D'/var/lib/cassandra/data/rapidshare/querycache-hc-1=
9700-Data.db'),
>> SSTableReader(path=3D'/var/lib/cassandra/data/rapidshare/querycache-hc-1=
9686-Data.db'),
>> SSTableReader(path=3D'/var/lib/cassandra/data/rapidshare/querycache-hc-1=
9696-Data.db'),
>> SSTableReader(path=3D'/var/lib/cassandra/data/rapidshare/querycache-hc-1=
9687-Data.db'),
>> SSTableReader(path=3D'/var/lib/cassandra/data/rapidshare/querycache-hc-1=
9695-Data.db'),
>> SSTableReader(path=3D'/var/lib/cassandra/data/rapidshare/querycache-hc-1=
9689-Data.db'),
>> SSTableReader(path=3D'/var/lib/cassandra/data/rapidshare/querycache-hc-1=
9694-Data.db'),
>> SSTableReader(path=3D'/var/lib/cassandra/data/rapidshare/querycache-hc-1=
9693-Data.db')]
>>
>> =C2=A0INFO [CompactionExecutor:891] 2012-04-05 22:39:57,299 CompactionTa=
sk.java
>> (line 221) *** LEVEL 1 *** Compacted to
>> [/var/lib/cassandra/data/rapidshare/querycache-hc-19701-Data.db,/var/lib=
/cassandra/data/rapidshare/querycache-hc-19702-Data.db,/var/lib/cassandra/d=
ata/rapidshare/querycache-hc-19703-Data.db,/var/lib/cassandra/data/rapidsha=
re/querycache-hc-19704-Data.db,/var/lib/cassandra/data/rapidshare/querycach=
e-hc-19705-Data.db,/var/lib/cassandra/data/rapidshare/querycache-hc-19706-D=
ata.db,/var/lib/cassandra/data/rapidshare/querycache-hc-19707-Data.db,/var/=
lib/cassandra/data/rapidshare/querycache-hc-19708-Data.db,/var/lib/cassandr=
a/data/rapidshare/querycache-hc-19709-Data.db,/var/lib/cassandra/data/rapid=
share/querycache-hc-19710-Data.db,/var/lib/cassandra/data/rapidshare/queryc=
ache-hc-19711-Data.db,].
>> =C2=A059,643,011 to 57,564,216 (~96% of original) bytes for 590,909 keys=
 at
>> 1.814434MB/s. =C2=A0Time: 30,256ms.
>>
>>
>
>
>
> --
> Jonathan Ellis
> Project Chair, Apache Cassandra
> co-founder of DataStax, the source for professional Cassandra support
> http://www.datastax.com