Was it a major compaction? I ask because it's definitely a solution that
had to work, but it's also a solution that - in general - probably
no-one here would suggest you to use.
M.
W dniu 05.03.2013 07:08, Matthias Zeilinger pisze:
Hi,
I have done a manually compaction over the nodetool and this worked. But thx
for the explanation, why it wasn´t compacted
Br,
Matthias Zeilinger
Production Operation – Shared Services
P: +43 (0) 50 858-31185
M: +43 (0) 664 85-34459
E: matthias.zeilin...@bwinparty.com
bwin.party services (Austria) GmbH
Marxergasse 1B
A-1030 Vienna
www.bwinparty.com
From: Bryan Talbot [mailto:btal...@aeriagames.com]
Sent: Montag, 04. März 2013 23:36
To: user@cassandra.apache.org
Subject: Re: old data / tombstones are not deleted after ttl
Those older files won't be included in a compaction until there are
min_compaction_threshold (4) files of that size. When you get another SS table
-Data.db file that is about 12-18GB then you'll have 4 and they will be
compacted together into one new file. At that time, if there are any rows with
only tombstones that are all older than gc_grace the row will be removed
(assuming the row exists exclusively in the 4 input SS tables). Columns with
data that is more than TTL seconds old will be written with a tombstone. If
the row does have column values in SS tables that are not being compacted, the
row will not be removed.
-Bryan
On Sun, Mar 3, 2013 at 11:07 PM, Matthias Zeilinger
<matthias.zeilin...@bwinparty.com<mailto:matthias.zeilin...@bwinparty.com>>
wrote:
Hi,
I´m running Cassandra 1.1.5 and have following issue.
I´m using a 10 days TTL on my CF. I can see a lot of tombstones in there, but
they aren´t deleted after compaction.
I have tried a nodetool –cleanup and also a restart of Cassandra, but nothing
happened.
total 61G
drwxr-xr-x 2 cassandra dba 20K Mar 4 06:35 .
drwxr-xr-x 10 cassandra dba 4.0K Dec 10 13:05 ..
-rw-r--r-- 1 cassandra dba 15M Dec 15 22:04
whatever-he-1398-CompressionInfo.db
-rw-r--r-- 1 cassandra dba 19G Dec 15 22:04 whatever-he-1398-Data.db
-rw-r--r-- 1 cassandra dba 15M Dec 15 22:04 whatever-he-1398-Filter.db
-rw-r--r-- 1 cassandra dba 357M Dec 15 22:04 whatever-he-1398-Index.db
-rw-r--r-- 1 cassandra dba 4.3K Dec 15 22:04 whatever-he-1398-Statistics.db
-rw-r--r-- 1 cassandra dba 9.5M Feb 6 15:45
whatever-he-5464-CompressionInfo.db
-rw-r--r-- 1 cassandra dba 12G Feb 6 15:45 whatever-he-5464-Data.db
-rw-r--r-- 1 cassandra dba 48M Feb 6 15:45 whatever-he-5464-Filter.db
-rw-r--r-- 1 cassandra dba 736M Feb 6 15:45 whatever-he-5464-Index.db
-rw-r--r-- 1 cassandra dba 4.3K Feb 6 15:45 whatever-he-5464-Statistics.db
-rw-r--r-- 1 cassandra dba 9.7M Feb 21 19:13
whatever-he-6829-CompressionInfo.db
-rw-r--r-- 1 cassandra dba 12G Feb 21 19:13 whatever-he-6829-Data.db
-rw-r--r-- 1 cassandra dba 47M Feb 21 19:13 whatever-he-6829-Filter.db
-rw-r--r-- 1 cassandra dba 792M Feb 21 19:13 whatever-he-6829-Index.db
-rw-r--r-- 1 cassandra dba 4.3K Feb 21 19:13 whatever-he-6829-Statistics.db
-rw-r--r-- 1 cassandra dba 3.7M Mar 1 10:46
whatever-he-7578-CompressionInfo.db
-rw-r--r-- 1 cassandra dba 4.3G Mar 1 10:46 whatever-he-7578-Data.db
-rw-r--r-- 1 cassandra dba 12M Mar 1 10:46 whatever-he-7578-Filter.db
-rw-r--r-- 1 cassandra dba 274M Mar 1 10:46 whatever-he-7578-Index.db
-rw-r--r-- 1 cassandra dba 4.3K Mar 1 10:46 whatever-he-7578-Statistics.db
-rw-r--r-- 1 cassandra dba 3.6M Mar 1 11:21
whatever-he-7582-CompressionInfo.db
-rw-r--r-- 1 cassandra dba 4.3G Mar 1 11:21 whatever-he-7582-Data.db
-rw-r--r-- 1 cassandra dba 9.7M Mar 1 11:21 whatever-he-7582-Filter.db
-rw-r--r-- 1 cassandra dba 236M Mar 1 11:21 whatever-he-7582-Index.db
-rw-r--r-- 1 cassandra dba 4.3K Mar 1 11:21 whatever-he-7582-Statistics.db
-rw-r--r-- 1 cassandra dba 3.7M Mar 3 12:13
whatever-he-7869-CompressionInfo.db
-rw-r--r-- 1 cassandra dba 4.3G Mar 3 12:13 whatever-he-7869-Data.db
-rw-r--r-- 1 cassandra dba 9.8M Mar 3 12:13 whatever-he-7869-Filter.db
-rw-r--r-- 1 cassandra dba 239M Mar 3 12:13 whatever-he-7869-Index.db
-rw-r--r-- 1 cassandra dba 4.3K Mar 3 12:13 whatever-he-7869-Statistics.db
-rw-r--r-- 1 cassandra dba 924K Mar 3 18:02
whatever-he-7953-CompressionInfo.db
-rw-r--r-- 1 cassandra dba 1.1G Mar 3 18:02 whatever-he-7953-Data.db
-rw-r--r-- 1 cassandra dba 2.1M Mar 3 18:02 whatever-he-7953-Filter.db
-rw-r--r-- 1 cassandra dba 51M Mar 3 18:02 whatever-he-7953-Index.db
-rw-r--r-- 1 cassandra dba 4.3K Mar 3 18:02 whatever-he-7953-Statistics.db
-rw-r--r-- 1 cassandra dba 231K Mar 3 20:06
whatever-he-7974-CompressionInfo.db
-rw-r--r-- 1 cassandra dba 268M Mar 3 20:06 whatever-he-7974-Data.db
-rw-r--r-- 1 cassandra dba 483K Mar 3 20:06 whatever-he-7974-Filter.db
-rw-r--r-- 1 cassandra dba 12M Mar 3 20:06 whatever-he-7974-Index.db
-rw-r--r-- 1 cassandra dba 4.3K Mar 3 20:06 whatever-he-7974-Statistics.db
-rw-r--r-- 1 cassandra dba 116K Mar 4 06:28
whatever-he-8002-CompressionInfo.db
-rw-r--r-- 1 cassandra dba 146M Mar 4 06:28 whatever-he-8002-Data.db
-rw-r--r-- 1 cassandra dba 646K Mar 4 06:28 whatever-he-8002-Filter.db
-rw-r--r-- 1 cassandra dba 16M Mar 4 06:28 whatever-he-8002-Index.db
-rw-r--r-- 1 cassandra dba 4.3K Mar 4 06:28 whatever-he-8002-Statistics.db
-rw-r--r-- 1 cassandra dba 58K Mar 4 06:28
whatever-he-8003-CompressionInfo.db
-rw-r--r-- 1 cassandra dba 67M Mar 4 06:28 whatever-he-8003-Data.db
-rw-r--r-- 1 cassandra dba 105K Mar 4 06:28 whatever-he-8003-Filter.db
-rw-r--r-- 1 cassandra dba 2.5M Mar 4 06:28 whatever-he-8003-Index.db
-rw-r--r-- 1 cassandra dba 4.3K Mar 4 06:28 whatever-he-8003-Statistics.db
-rw-r--r-- 1 cassandra dba 230K Mar 4 06:30
whatever-he-8004-CompressionInfo.db
-rw-r--r-- 1 cassandra dba 261M Mar 4 06:30 whatever-he-8004-Data.db
-rw-r--r-- 1 cassandra dba 480K Mar 4 06:30 whatever-he-8004-Filter.db
-rw-r--r-- 1 cassandra dba 12M Mar 4 06:30 whatever-he-8004-Index.db
-rw-r--r-- 1 cassandra dba 4.3K Mar 4 06:30 whatever-he-8004-Statistics.db
-rw-r--r-- 1 cassandra dba 15K Mar 4 06:30
whatever-he-8005-CompressionInfo.db
-rw-r--r-- 1 cassandra dba 16M Mar 4 06:30 whatever-he-8005-Data.db
-rw-r--r-- 1 cassandra dba 39K Mar 4 06:30 whatever-he-8005-Filter.db
-rw-r--r-- 1 cassandra dba 944K Mar 4 06:30 whatever-he-8005-Index.db
-rw-r--r-- 1 cassandra dba 4.3K Mar 4 06:30 whatever-he-8005-Statistics.db
-rw-r--r-- 1 cassandra dba 5.0K Mar 4 06:35
whatever-he-8006-CompressionInfo.db
-rw-r--r-- 1 cassandra dba 6.7M Mar 4 06:35 whatever-he-8006-Data.db
-rw-r--r-- 1 cassandra dba 81K Mar 4 06:35 whatever-he-8006-Filter.db
-rw-r--r-- 1 cassandra dba 2.0M Mar 4 06:35 whatever-he-8006-Index.db
-rw-r--r-- 1 cassandra dba 4.3K Mar 4 06:35 whatever-he-8006-Statistics.db
The things marked in red, I guess, are the old data, but they aren´t deleted.
As you can see on the date, they are older than 10 days.
Is there any possibility to delete them?
Here is also the schema of the CF:
create column family whatever
with column_type = 'Standard'
and comparator = 'AsciiType'
and default_validation_class = 'AsciiType'
and key_validation_class = 'AsciiType'
and read_repair_chance = 0.0
and dclocal_read_repair_chance = 0.0
and gc_grace = 0
and min_compaction_threshold = 4
and max_compaction_threshold = 32
and replicate_on_write = false
and compaction_strategy =
'org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy'
and caching = 'KEYS_ONLY'
and compression_options = {'sstable_compression' :
'org.apache.cassandra.io.compress.SnappyCompressor'};
Br,
Matthias Zeilinger
Production Operation – Shared Services
P: +43 (0) 50 858-31185<tel:%2B43%20%280%29%2050%20858-31185>
M: +43 (0) 664 85-34459<tel:%2B43%20%280%29%20664%2085-34459>
E: matthias.zeilin...@bwinparty.com<mailto:matthias.zeilin...@bwinparty.com>
bwin.party services (Austria) GmbH
Marxergasse 1B
A-1030 Vienna
www.bwinparty.com<http://www.bwinparty.com>
