Hello, I am trying to verify and understand fully the functionality of row cache in Cassandra.
I have been using mainly two different sources for information: https://github.com/apache/cassandra/blob/0db88242c66d3a7193a9ad836f9a515b3ac7f9fa/src/java/org/apache/cassandra/db/SinglePartitionReadCommand.java#L476 <https://github.com/apache/cassandra/blob/0db88242c66d3a7193a9ad836f9a515b3ac7f9fa/src/java/org/apache/cassandra/db/SinglePartitionReadCommand.java#L476> AND http://cassandra.apache.org/doc/latest/cql/ddl.html#caching-options <http://cassandra.apache.org/doc/latest/cql/ddl.html#caching-options> and based on what I read documentation is not correct. Documentation says like this: “rows_per_partition: The amount of rows to cache per partition (“row cache”). If an integer n is specified, the first n queried rows of a partition will be cached. Other possible options are ALL, to cache all rows of a queried partition, or NONE to disable row caching.” The problematic part is "the first n queried rows of a partition will be cached”. Shouldn’t it be that the first N rows in a partition will be cached? Not first N that are queried? If this is the case, I’m more than happy to create a ticket (and maybe even create a patch) for the doc update. BR, Hannu
