Hi. This is Ui Jin, Lim in Korea, LG CNS We had setup and are operating hbase 0.98.13 on our customer, iptv Company. Our customer claim about this spike. Following is our status.
. We had been operating with BlockCache(heap) for 3 months. The ratio of above 100ms has been reached 6.69% of total transaction. The following graph show the trend of executions, above 100ms per minute, at June 17th. (This is the response time of 2~3 Hbase transactions) [cid:[email protected]] - After Hbase restarting at June 18th, The spikes had been reduced dramatically. But its ratio had been increasing continuously. [cid:[email protected]] - We had adopted off-heap bucket cache at August 19th. But the increasing does not disappear. [cid:[email protected]] [cid:[email protected]] - We set HBase to log slow query which have above 10ms execution time. All RegionServer logs show increasing its counts. [cid:[email protected]] What we concern is not the spike itself but its incremental trend. There is no increment of transactions and dataset. I ask your thoughts about this issue. ------------------------------------------------------------- UI JIN, LIM DNA 3.0 - LG CNS Data Architecture Advisory Big Data Technical Support Team Mobile : +82) 010-8307-1210
