Liang Xie created HBASE-11359:
---------------------------------
Summary: A simple request timeout interrupt mechanism in HBase
server side
Key: HBASE-11359
URL: https://issues.apache.org/jira/browse/HBASE-11359
Project: HBase
Issue Type: Improvement
Components: regionserver
Affects Versions: 0.94.20, 0.99.0
Reporter: Liang Xie
we had introduced a fail fast mechanism in RPC layer, see HBASE-10506.
But still, a slow latency problem comes from lower HDFS layer could make all
HBase handler threads slow, sometimes those handler could hang several seconds.
it's meanlingless to continue processing those read/write requests in the
valuable rpc handler threads, especially the ones need to do a costly physical
read operation or networking activity(write pipeline). A better solution should
be similar with twitter MySQL branch: statement-timeout feature. I haven't
taken time on figure out weather it's need to break compatibility or not in
master, we are using a 0.94 branch, to me it will break if i adding a operation
timeout field in every client rpc request.
so i added a simpler patch using the existing
"rpcCall.throwExceptionIfCallerDisconnected()", instrumenting it just before
HLog sync and DFSInputStream read/pread (@readAtOffset).
--
This message was sent by Atlassian JIRA
(v6.2#6252)
