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Posted to commits@cassandra.apache.org by ma...@apache.org on 2015/08/20 18:17:09 UTC
[1/3] cassandra git commit: Update CQL docs with
DateTieredCompactionStrategy
Repository: cassandra
Updated Branches:
refs/heads/cassandra-2.2 4fc58513d -> a6dd2b893
Update CQL docs with DateTieredCompactionStrategy
Patch by marcuse; reviewed by yukim for CASSANDRA-8199
Project: http://git-wip-us.apache.org/repos/asf/cassandra/repo
Commit: http://git-wip-us.apache.org/repos/asf/cassandra/commit/500c035d
Tree: http://git-wip-us.apache.org/repos/asf/cassandra/tree/500c035d
Diff: http://git-wip-us.apache.org/repos/asf/cassandra/diff/500c035d
Branch: refs/heads/cassandra-2.2
Commit: 500c035d21abc0cfb900b1fe64dd064e26d138bc
Parents: 17042f1
Author: Marcus Eriksson <ma...@apache.org>
Authored: Thu Aug 20 18:14:41 2015 +0200
Committer: Marcus Eriksson <ma...@apache.org>
Committed: Thu Aug 20 18:14:41 2015 +0200
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doc/cql3/CQL.textile | 29 ++++++++++++++++-------------
1 file changed, 16 insertions(+), 13 deletions(-)
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http://git-wip-us.apache.org/repos/asf/cassandra/blob/500c035d/doc/cql3/CQL.textile
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diff --git a/doc/cql3/CQL.textile b/doc/cql3/CQL.textile
index 6db52d2..add0df8 100644
--- a/doc/cql3/CQL.textile
+++ b/doc/cql3/CQL.textile
@@ -336,19 +336,22 @@ Table creation supports the following other @<property>@:
h4(#compactionOptions). @compaction@ options
-The @compaction@ property must at least define the @'class'@ sub-option, that defines the compaction strategy class to use. The default supported class are @'SizeTieredCompactionStrategy'@ and @'LeveledCompactionStrategy'@. Custom strategy can be provided by specifying the full class name as a "string constant":#constants. The rest of the sub-options depends on the chosen class. The sub-options supported by the default classes are:
-
-|_. option |_. supported compaction strategy |_. default |_. description |
-| @enabled@ | _all_ | true | A boolean denoting whether compaction should be enabled or not.|
-| @tombstone_threshold@ | _all_ | 0.2 | A ratio such that if a sstable has more than this ratio of gcable tombstones over all contained columns, the sstable will be compacted (with no other sstables) for the purpose of purging those tombstones. |
-| @tombstone_compaction_interval@ | _all_ | 1 day | The minimum time to wait after an sstable creation time before considering it for "tombstone compaction", where "tombstone compaction" is the compaction triggered if the sstable has more gcable tombstones than @tombstone_threshold@. |
-| @unchecked_tombstone_compaction@ | _all_ | false | Setting this to true enables more aggressive tombstone compactions - single sstable tombstone compactions will run without checking how likely it is that they will be successful. |
-| @min_sstable_size@ | SizeTieredCompactionStrategy | 50MB | The size tiered strategy groups SSTables to compact in buckets. A bucket groups SSTables that differs from less than 50% in size. However, for small sizes, this would result in a bucketing that is too fine grained. @min_sstable_size@ defines a size threshold (in bytes) below which all SSTables belong to one unique bucket|
-| @min_threshold@ | SizeTieredCompactionStrategy | 4 | Minimum number of SSTables needed to start a minor compaction.|
-| @max_threshold@ | SizeTieredCompactionStrategy | 32 | Maximum number of SSTables processed by one minor compaction.|
-| @bucket_low@ | SizeTieredCompactionStrategy | 0.5 | Size tiered consider sstables to be within the same bucket if their size is within [average_size * @bucket_low@, average_size * @bucket_high@ ] (i.e the default groups sstable whose sizes diverges by at most 50%)|
-| @bucket_high@ | SizeTieredCompactionStrategy | 1.5 | Size tiered consider sstables to be within the same bucket if their size is within [average_size * @bucket_low@, average_size * @bucket_high@ ] (i.e the default groups sstable whose sizes diverges by at most 50%).|
-| @sstable_size_in_mb@ | LeveledCompactionStrategy | 5MB | The target size (in MB) for sstables in the leveled strategy. Note that while sstable sizes should stay less or equal to @sstable_size_in_mb@, it is possible to exceptionally have a larger sstable as during compaction, data for a given partition key are never split into 2 sstables|
+The @compaction@ property must at least define the @'class'@ sub-option, that defines the compaction strategy class to use. The default supported class are @'SizeTieredCompactionStrategy'@, @'LeveledCompactionStrategy'@ and @'DateTieredCompactionStrategy'@. Custom strategy can be provided by specifying the full class name as a "string constant":#constants. The rest of the sub-options depends on the chosen class. The sub-options supported by the default classes are:
+
+|_. option |_. supported compaction strategy |_. default |_. description |
+| @enabled@ | _all_ | true | A boolean denoting whether compaction should be enabled or not.|
+| @tombstone_threshold@ | _all_ | 0.2 | A ratio such that if a sstable has more than this ratio of gcable tombstones over all contained columns, the sstable will be compacted (with no other sstables) for the purpose of purging those tombstones. |
+| @tombstone_compaction_interval@ | _all_ | 1 day | The minimum time to wait after an sstable creation time before considering it for "tombstone compaction", where "tombstone compaction" is the compaction triggered if the sstable has more gcable tombstones than @tombstone_threshold@. |
+| @unchecked_tombstone_compaction@ | _all_ | false | Setting this to true enables more aggressive tombstone compactions - single sstable tombstone compactions will run without checking how likely it is that they will be successful. |
+| @min_sstable_size@ | SizeTieredCompactionStrategy | 50MB | The size tiered strategy groups SSTables to compact in buckets. A bucket groups SSTables that differs from less than 50% in size. However, for small sizes, this would result in a bucketing that is too fine grained. @min_sstable_size@ defines a size threshold (in bytes) below which all SSTables belong to one unique bucket|
+| @min_threshold@ | SizeTieredCompactionStrategy | 4 | Minimum number of SSTables needed to start a minor compaction.|
+| @max_threshold@ | SizeTieredCompactionStrategy | 32 | Maximum number of SSTables processed by one minor compaction.|
+| @bucket_low@ | SizeTieredCompactionStrategy | 0.5 | Size tiered consider sstables to be within the same bucket if their size is within [average_size * @bucket_low@, average_size * @bucket_high@ ] (i.e the default groups sstable whose sizes diverges by at most 50%)|
+| @bucket_high@ | SizeTieredCompactionStrategy | 1.5 | Size tiered consider sstables to be within the same bucket if their size is within [average_size * @bucket_low@, average_size * @bucket_high@ ] (i.e the default groups sstable whose sizes diverges by at most 50%).|
+| @sstable_size_in_mb@ | LeveledCompactionStrategy | 5MB | The target size (in MB) for sstables in the leveled strategy. Note that while sstable sizes should stay less or equal to @sstable_size_in_mb@, it is possible to exceptionally have a larger sstable as during compaction, data for a given partition key are never split into 2 sstables|
+| @timestamp_resolution@ | DateTieredCompactionStrategy | MICROSECONDS | The timestamp resolution used when inserting data, could be MILLISECONDS, MICROSECONDS etc (should be understandable by Java TimeUnit)|
+| @base_time_seconds@ | DateTieredCompactionStrategy | 60 | The base size of the time windows. |
+| @max_sstable_age_days@ | DateTieredCompactionStrategy | 365 | SSTables only containing data that is older than this will never be compacted. |
For the @compression@ property, the following default sub-options are available:
[3/3] cassandra git commit: Merge branch 'cassandra-2.1' into
cassandra-2.2
Posted by ma...@apache.org.
Merge branch 'cassandra-2.1' into cassandra-2.2
Project: http://git-wip-us.apache.org/repos/asf/cassandra/repo
Commit: http://git-wip-us.apache.org/repos/asf/cassandra/commit/a6dd2b89
Tree: http://git-wip-us.apache.org/repos/asf/cassandra/tree/a6dd2b89
Diff: http://git-wip-us.apache.org/repos/asf/cassandra/diff/a6dd2b89
Branch: refs/heads/cassandra-2.2
Commit: a6dd2b893451ae0e88048878dfeb609c4d240cc5
Parents: 4fc5851 df9e798
Author: Marcus Eriksson <ma...@apache.org>
Authored: Thu Aug 20 18:15:55 2015 +0200
Committer: Marcus Eriksson <ma...@apache.org>
Committed: Thu Aug 20 18:15:55 2015 +0200
----------------------------------------------------------------------
doc/cql3/CQL.textile | 29 ++++++++++++++++-------------
1 file changed, 16 insertions(+), 13 deletions(-)
----------------------------------------------------------------------
http://git-wip-us.apache.org/repos/asf/cassandra/blob/a6dd2b89/doc/cql3/CQL.textile
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[2/3] cassandra git commit: Merge branch 'cassandra-2.0' into
cassandra-2.1
Posted by ma...@apache.org.
Merge branch 'cassandra-2.0' into cassandra-2.1
Project: http://git-wip-us.apache.org/repos/asf/cassandra/repo
Commit: http://git-wip-us.apache.org/repos/asf/cassandra/commit/df9e798d
Tree: http://git-wip-us.apache.org/repos/asf/cassandra/tree/df9e798d
Diff: http://git-wip-us.apache.org/repos/asf/cassandra/diff/df9e798d
Branch: refs/heads/cassandra-2.2
Commit: df9e798de6eb4b47eacab209f82bc7e72347946a
Parents: 755a6b2 500c035
Author: Marcus Eriksson <ma...@apache.org>
Authored: Thu Aug 20 18:15:43 2015 +0200
Committer: Marcus Eriksson <ma...@apache.org>
Committed: Thu Aug 20 18:15:43 2015 +0200
----------------------------------------------------------------------
doc/cql3/CQL.textile | 29 ++++++++++++++++-------------
1 file changed, 16 insertions(+), 13 deletions(-)
----------------------------------------------------------------------
http://git-wip-us.apache.org/repos/asf/cassandra/blob/df9e798d/doc/cql3/CQL.textile
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