keith-turner commented on a change in pull request #383: ACCUMULO-4809 Avoid
blocking during session cleanup
URL: https://github.com/apache/accumulo/pull/383#discussion_r168271827
##########
File path:
server/tserver/src/main/java/org/apache/accumulo/tserver/session/SessionManager.java
##########
@@ -169,36 +169,36 @@ public Session removeSession(long sessionId, boolean
unreserve) {
}
private void sweep(final long maxIdle, final long maxUpdateIdle) {
- List<Session> sessionsToCleanup = new ArrayList<>();
- synchronized (this) {
- Iterator<Session> iter = sessions.values().iterator();
- while (iter.hasNext()) {
- Session session = iter.next();
- long configuredIdle = maxIdle;
- if (session instanceof UpdateSession) {
- configuredIdle = maxUpdateIdle;
- }
- long idleTime = System.currentTimeMillis() - session.lastAccessTime;
- if (idleTime > configuredIdle && !session.reserved) {
- log.info("Closing idle session from user=" + session.getUser() + ",
client=" + session.client + ", idle=" + idleTime + "ms");
- iter.remove();
- sessionsToCleanup.add(session);
+ synchronized (idleSessions) {
Review comment:
> Is this to prevent multiple interleaving calls to sweep?
Yeah, that is the purpose. I think in the current code that only one thread
will ever call sweep at a time, but I added the sync just to be safe. I will
add a comment about this.
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
With regards,
Apache Git Services
