Return-Path: X-Original-To: apmail-hadoop-common-dev-archive@www.apache.org Delivered-To: apmail-hadoop-common-dev-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id E2F47C8B4 for ; Thu, 18 Jul 2013 17:39:06 +0000 (UTC) Received: (qmail 58989 invoked by uid 500); 18 Jul 2013 17:38:59 -0000 Delivered-To: apmail-hadoop-common-dev-archive@hadoop.apache.org Received: (qmail 58848 invoked by uid 500); 18 Jul 2013 17:38:57 -0000 Mailing-List: contact common-dev-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: common-dev@hadoop.apache.org Delivered-To: mailing list common-dev@hadoop.apache.org Received: (qmail 58651 invoked by uid 99); 18 Jul 2013 17:38:51 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 18 Jul 2013 17:38:51 +0000 Date: Thu, 18 Jul 2013 17:38:51 +0000 (UTC) From: "Daryn Sharp (JIRA)" To: common-dev@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Created] (HADOOP-9747) Reduce unnecessary UGI synchronization MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 Daryn Sharp created HADOOP-9747: ----------------------------------- Summary: Reduce unnecessary UGI synchronization Key: HADOOP-9747 URL: https://issues.apache.org/jira/browse/HADOOP-9747 Project: Hadoop Common Issue Type: Bug Components: security Affects Versions: 2.0.0-alpha, 0.23.0, 3.0.0 Reporter: Daryn Sharp Assignee: Daryn Sharp Priority: Critical Jstacks of heavily loaded NNs show up to dozens of threads blocking in the UGI. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira