Revert "Remove SetThreadName as it consumes a significant amount of c…

…pu time"

This reverts commit 771756b.

The scheduler changes can result in smaller queries being starved
by bigger queries due to the introduction of global per-node queues.
Reverting for now so we can release. We'll revisit later.

presto-server/src/main/java/com/facebook/presto/server/HttpRemoteTask.java

@@ -280,8 +280,10 @@ public synchronized void setOutputBuffers(OutputBuffers newOutputBuffers)
     @Override
     public synchronized int getPartitionedSplitCount()
     {
-        int splitCount = pendingSplits.get(planFragment.getPartitionedSource()).size();
-        return splitCount + taskInfo.get().getStats().getQueuedPartitionedDrivers() + taskInfo.get().getStats().getRunningPartitionedDrivers();
+        try (SetThreadName setThreadName = new SetThreadName("HttpRemoteTask-%s", taskId)) {
+            int splitCount = pendingSplits.get(planFragment.getPartitionedSource()).size();
+            return splitCount + taskInfo.get().getStats().getQueuedPartitionedDrivers() + taskInfo.get().getStats().getRunningPartitionedDrivers();
+        }
     }
 
     @Override