2010/4/29 casablinca126.com <casabli...@126.com>: > Hi, > Now I start to know what's really happenning. The INDEX_INTERVAL(in > IndexSummary.java) was set to be 4; so at least 1/4 > of the indices are in the heap. For a node with 20M columns, most of the heap > is occupied by indices, and of course a poor performance > with processing large files. > Is it possible to modify the INDEX_INTERVAL without reconstruct the > sstables? I modified the code, and restart every node, > but "NotFoundException()" is reported when read the columns.
No. INDEX_INTERVAL is not intended to be configurable. (It is all-caps, the convention for constants...) -- Jonathan Ellis Project Chair, Apache Cassandra co-founder of Riptano, the source for professional Cassandra support http://riptano.com
