HBASE-25212 Optionally abort requests in progress after deciding a region should...

HBASE-25212 Optionally abort requests in progress after deciding a region should close (#2574)

If hbase.regionserver.close.wait.abort is set to true, interrupt RPC
handler threads holding the region close lock.

Until requests in progress can be aborted, wait on the region close lock for
a configurable interval (specified by hbase.regionserver.close.wait.time.ms,
default 60000 (1 minute)). If we have failed to acquire the close lock after
this interval elapses, if allowed (also specified by
hbase.regionserver.close.wait.abort), abort the regionserver.

We will attempt to interrupt any running handlers every
hbase.regionserver.close.wait.interval.ms (default 10000 (10 seconds)) until
either the close lock is acquired or we reach the maximum wait time.

Define a subset of region operations as interruptible. Track threads holding
the close lock transiting those operations. Set the thread interrupt status
of tracked threads when trying to close the region. Use the thread interrupt
status where safe to break out of request processing.

Signed-off-by: Bharath Vissapragada <bharathv@apache.org>
Signed-off-by: Duo Zhang <zhangduo@apache.org>
Signed-off-by: Reid Chan <reidchan@apache.org>
Signed-off-by: Viraj Jasani <vjasani@apache.org>