> Daniel: > > Thanks. That thread helped me solve my problem. > > I was able to run a 700k MySQL record import without a single memory error. > > I changed the following sections in storage-conf.xml to fix the OutofMemory errors: > > <DiskAccessMode>standard</DiskAccessMode> > <CommitLogSync>batch</CommitLogSync> > <CommitLogSyncBatchWindowInMS>1</CommitLogSyncBatchWindowInMS>
Going to standard mode is not very good. It gives performance penalty to about 30% on uncached reads according to my own homegrown stress test. Do you use 32-bit or 64-bit JVM ? In 32-bit JVM you have no choice but to use standard mode. If you're using 64-bit JVM and getting this error it looks like you have limited virtual memory space. If you're under linux you can fix it with command ulimit -v unlimited in the same shell just before launching cassandra node.
