Ensure the stability and availability of a Cassandra deployment on Pega Platform by providing enough disk space to run compactions.
To run compactions without errors, ensure that you have at
least 60% free disk space.
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In the header of Dev Studio, click .
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On the Decision Data Store landing page, click the status
of the node for which you want to check the available disk space.
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In the Disk usage section, verify that the amount of
existing data constitutes less than 40% of the total disk space.
The amount of data shown in the Disk usage section refers
to data in SSTables, and does not include the disk space that Cassandra uses for
compaction.
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If the existing data takes up more than 40% of the total disk space, provide
Cassandra with more disk space by removing obsolete files, or by adding more
disk space.
To remove obsolete Cassandra files, in the nodetool utility, run the
nodetool cleanup command. For more information about adding
additional disk space, see the Apache Cassandra documentation.