disabling hinted handoff will prevent creation of new hints, but it will continue to attempt to deliver existing ones unless you manually delete the hint files in the system/ dir.
On Mon, May 31, 2010 at 6:04 AM, Ran Tavory <ran...@gmail.com> wrote: > In 0.6.2 I disabled hinted handoff, however tpstats and cfstats report seems > odd. > On all servers in the cluster I have: > <HintedHandoffEnabled>false</HintedHandoffEnabled> > tpstats reports 5 completed handoffs. > $ nodetool -h cass25 -p 9004 tpstats > Pool Name Active Pending Completed > FILEUTILS-DELETE-POOL 0 0 2 > STREAM-STAGE 0 0 0 > RESPONSE-STAGE 0 0 5903099 > ROW-READ-STAGE 0 0 669093 > LB-OPERATIONS 0 0 0 > MESSAGE-DESERIALIZER-POOL 1 0 6595504 > GMFD 0 0 35947 > LB-TARGET 0 0 0 > CONSISTENCY-MANAGER 0 0 669095 > ROW-MUTATION-STAGE 0 0 644360 > MESSAGE-STREAMING-POOL 0 0 0 > LOAD-BALANCER-STAGE 0 0 0 > FLUSH-SORTER-POOL 0 0 0 > MEMTABLE-POST-FLUSHER 0 0 7 > FLUSH-WRITER-POOL 0 0 7 > AE-SERVICE-STAGE 0 0 1 > HINTED-HANDOFF-POOL 0 0 5 > In data/system/* there are only LocationInfo files, so looks like hinted > handoff is indeed disabled and cfstats does indicate there are 0 bytes, > however it also indicates of 32 reads which I didn't expect (cluster has > been up for a few hours). > $ nodetool -h cass25 -p 9004 tpstats > ... > Column Family: HintsColumnFamily > SSTable count: 0 > Space used (live): 0 > Space used (total): 0 > Memtable Columns Count: 0 > Memtable Data Size: 0 > Memtable Switch Count: 0 > Read Count: 32 > Read Latency: 0.062 ms. > Write Count: 0 > Write Latency: NaN ms. > Pending Tasks: 0 > Key cache capacity: 1 > Key cache size: 0 > Key cache hit rate: NaN > Row cache: disabled > Compacted row minimum size: 0 > Compacted row maximum size: 0 > Compacted row mean size: 0 > Any idea why is this happening? -- Jonathan Ellis Project Chair, Apache Cassandra co-founder of Riptano, the source for professional Cassandra support http://riptano.com
