Re: frequently update/read table and level compaction

2014-10-23 Thread DuyHai Doan
#1 There are 2 levels of JMX metrics: the one for each table and the one related to the StorageProxy. Depending on each "readcount" you're looking at, the meaning can be different, watch this video for more explanation: https://www.youtube.com/watch?v=w6aD4vAY_a8&index=14&list=PLqcm6qE9lgKJkxYZUOI

frequently update/read table and level compaction

2014-10-20 Thread Jimmy Lin
Hi, I have a column family/ table that has frequent update on one of the column, and one column that has infrequent update. Rest of the columns never changed. Our application also read frequently on this table. We have seen some read latency issue on this table and plan to switch to use level comp