Hi Everyone,
I'm experiencing a threading issue with the Hive client where I want to run
multiple queries on the same JVM.
The problem I'm having is that org.apache.hadoop.hive.ql.Driver#run (line 907)
has the following few lines of code :
synchronized (compileMonitor) {
ret = compile(command);
}
The compileMonitor is a static so it blocks all threads even though I'm using
different instances of the Driver class. I could explicitly call Driver#compile
then Driver#execute to avoid the synchronized block but I don't know if it's
serving a special purpose. Does anyone know why that synchronized block is
there and if its really necessary ?
Thanks,
Kris
