Benoit, Thanks, that helped. I should have checked that one out before. --- Gautam
On Fri, Apr 2, 2010 at 10:16 AM, Benoit Perroud <ben...@noisette.ch> wrote: > A way to read all the db without having an OOM is to limit the amount > of rows to be returned, and to iterate over the query, the starting > key being the last returned key. Note that doing that way the first > key of the next iteration is the same as the last key of the preivous > iteration. > > The warning in SliceRange can also be applied for this function : > > http://wiki.apache.org/cassandra/API > "How many columns to return. Similar to LIMIT 100 in SQL. May be > arbitrarily large, but Thrift will materialize the whole result into > memory before returning it to the client, so be aware that you may be > better served by iterating through slices by passing the last value of > one call in as the start of the next instead of increasing count > arbitrarily large." > > Kind regards, > > Benoit. > > 2010/4/2 Gautam Singaraju <gautam.singar...@gmail.com>: >> I call the get_range_slice method in Java to get the list of all keys >> in Cassandra db. The db is pretty small, about 1.3GB on disk. I >> received the following error on the server: >> >> "java.lang.OutOfMemoryError: Requested array size exceeds VM limit" >> >> I changed the JVM size from 1 GB to 2 GB in >> cassandra/bin/cassandra.in.sh. But, the error still persists. >> >> Any help will be much appreciated. >> --- >> Gautam >> >
