cassandra-list-subranges

Lists token subtranges of a given column family. The output of this command can be used as input for subrange repair.

For more information on subrange repair, check this link: http://www.datastax.com/dev/blog/advanced-repair-techniques

Dependencies

• Maven

Compile

Before using the tool, compile it using the following command:

mvn package

Supported Cassandra versions

The project is configured by default to use Cassandra 1.2.16.

In order to compile for Cassandra 2.0.X, modify the <version> attribute on the "org.apache.cassandra" pom.xml dependency.

Usage

usage: java -jar list-subranges.jar <nodeIpAddress> <keySpace> <columnFamily>

Lists CF subranges for a particular node or token range.

The output of this command can be used as input for subrange repair.
 -et,--end-token <arg>       Calculate subranges of the range with this
                             end token.
 -n,--num-partitions <arg>   Number of partitions per subsplit. (default
                             32K)
 -o,--omit-header            Number of partitions per subsplit.
 -pr,--partitioner-range     Only consider the first range returned by the
                             partitioner.
 -st,--start-token <arg>     Calculate subranges of the range with this
                             start token.

Example

java -jar target/cassandra-list-subtranges-0.0.2-SNAPSHOT.jar 55.233.44.168 myks mycf

Start Token                             End Token                               Estimated Size
------------------------------------------------------------------------------------------------
74436767763955288882613195375699296256  74439973730150275837031561482829976149  32768
74439973730150275837031561482829976149  74443147299065436464785732203520768529  32768
74443147299065436464785732203520768529  74446308864678424144281808412855325434  32768
74446308864678424144281808412855325434  74449503757202033309267324422423573442  32768
74449503757202033309267324422423573442  74452743303842114263527346967989205341  32768
74452743303842114263527346967989205341  74455939694977870753656687218158491917  32768
74455939694977870753656687218158491917  74459152093479228618429026679825938232  32768
74459152093479228618429026679825938232  74462336296486462312787078846957455213  32768

Subrange repair

Use the output of the cassandra-list-subtranges as input for the repair command:

nodetool repair <ks> <cf> -st <startToken> -et <endToken>

Example

nodetool repair myks mycf -st 154281943151324548043651808333706143715 -et 156541576535381173370881008574335517403