Return-Path: X-Original-To: apmail-accumulo-notifications-archive@minotaur.apache.org Delivered-To: apmail-accumulo-notifications-archive@minotaur.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id A2EC5172F8 for ; Thu, 6 Nov 2014 18:53:36 +0000 (UTC) Received: (qmail 17731 invoked by uid 500); 6 Nov 2014 18:53:36 -0000 Delivered-To: apmail-accumulo-notifications-archive@accumulo.apache.org Received: (qmail 17686 invoked by uid 500); 6 Nov 2014 18:53:36 -0000 Mailing-List: contact notifications-help@accumulo.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: jira@apache.org Delivered-To: mailing list notifications@accumulo.apache.org Received: (qmail 17663 invoked by uid 99); 6 Nov 2014 18:53:36 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 06 Nov 2014 18:53:36 +0000 Date: Thu, 6 Nov 2014 18:53:36 +0000 (UTC) From: "Eric Newton (JIRA)" To: notifications@accumulo.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Resolved] (ACCUMULO-3297) FileManager semaphore acquisition may block Root and Metadata scans MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 [ https://issues.apache.org/jira/browse/ACCUMULO-3297?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Eric Newton resolved ACCUMULO-3297. ----------------------------------- Resolution: Fixed Assignee: Eric Newton > FileManager semaphore acquisition may block Root and Metadata scans > ------------------------------------------------------------------- > > Key: ACCUMULO-3297 > URL: https://issues.apache.org/jira/browse/ACCUMULO-3297 > Project: Accumulo > Issue Type: Bug > Components: tserver > Affects Versions: 1.6.1 > Environment: Tserver > Reporter: marco polo > Assignee: Eric Newton > Fix For: 1.6.2, 1.7.0 > > Time Spent: 0.5h > Remaining Estimate: 0h > > FileManager.java contains a semaphore to limit the max open files when calling acquireUninterruptibly( # permits ) when opening the readers. If scans against all tables causes the number of max open permits to exceed the configured system property, scans against the metadata and root extents will block until other readers are released. > This should be changed so that scans against the root and metadata extents proceed, despite exceeding the number of max open files. This likely means bypassing the semaphore acquisition for these tablets. -- This message was sent by Atlassian JIRA (v6.3.4#6332)