From hdfs-issues-return-240163-archive-asf-public=cust-asf.ponee.io@hadoop.apache.org Fri Oct 26 16:06:03 2018 Return-Path: X-Original-To: archive-asf-public@cust-asf.ponee.io Delivered-To: archive-asf-public@cust-asf.ponee.io Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by mx-eu-01.ponee.io (Postfix) with SMTP id 28B33180647 for ; Fri, 26 Oct 2018 16:06:02 +0200 (CEST) Received: (qmail 28025 invoked by uid 500); 26 Oct 2018 14:06:02 -0000 Mailing-List: contact hdfs-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Delivered-To: mailing list hdfs-issues@hadoop.apache.org Received: (qmail 28013 invoked by uid 99); 26 Oct 2018 14:06:02 -0000 Received: from pnap-us-west-generic-nat.apache.org (HELO spamd2-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 26 Oct 2018 14:06:02 +0000 Received: from localhost (localhost [127.0.0.1]) by spamd2-us-west.apache.org (ASF Mail Server at spamd2-us-west.apache.org) with ESMTP id C6CA31A4E96 for ; Fri, 26 Oct 2018 14:06:01 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd2-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: -110.301 X-Spam-Level: X-Spam-Status: No, score=-110.301 tagged_above=-999 required=6.31 tests=[ENV_AND_HDR_SPF_MATCH=-0.5, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, USER_IN_DEF_SPF_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=disabled Received: from mx1-lw-us.apache.org ([10.40.0.8]) by localhost (spamd2-us-west.apache.org [10.40.0.9]) (amavisd-new, port 10024) with ESMTP id YmNOpWt2fXLk for ; Fri, 26 Oct 2018 14:06:01 +0000 (UTC) Received: from mailrelay1-us-west.apache.org (mailrelay1-us-west.apache.org [209.188.14.139]) by mx1-lw-us.apache.org (ASF Mail Server at mx1-lw-us.apache.org) with ESMTP id 02F7A5F4DB for ; Fri, 26 Oct 2018 14:06:01 +0000 (UTC) Received: from jira-lw-us.apache.org (unknown [207.244.88.139]) by mailrelay1-us-west.apache.org (ASF Mail Server at mailrelay1-us-west.apache.org) with ESMTP id 9E143E0D27 for ; Fri, 26 Oct 2018 14:06:00 +0000 (UTC) Received: from jira-lw-us.apache.org (localhost [127.0.0.1]) by jira-lw-us.apache.org (ASF Mail Server at jira-lw-us.apache.org) with ESMTP id 61C962183F for ; Fri, 26 Oct 2018 14:06:00 +0000 (UTC) Date: Fri, 26 Oct 2018 14:06:00 +0000 (UTC) From: "James Clampffer (JIRA)" To: hdfs-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (HDFS-12134) libhdfs++: Add a synchronization interface for the GSSAPI 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/HDFS-12134?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] James Clampffer updated HDFS-12134: ----------------------------------- Fix Version/s: HDFS-8707 > libhdfs++: Add a synchronization interface for the GSSAPI > --------------------------------------------------------- > > Key: HDFS-12134 > URL: https://issues.apache.org/jira/browse/HDFS-12134 > Project: Hadoop HDFS > Issue Type: Sub-task > Components: hdfs-client > Reporter: James Clampffer > Assignee: James Clampffer > Priority: Major > Fix For: HDFS-8707 > > Attachments: HDFS-12134.HDFS-8707.000.patch, HDFS-12134.HDFS-8707.001.patch, HDFS-12134.HDFS-8707.002.patch, HDFS-12134.HDFS-8707.003.patch, HDFS-12134.HDFS-8707.004.patch > > > Bits of the GSSAPI that Cyrus Sasl uses aren't thread safe. There needs to be a way for a client application to share a lock with this library in order to prevent race conditions. It can be done using event callbacks through the C API but we can provide something more robust (RAII) in the C++ API. > Proposed client supplied lock, pretty much the C++17 lockable concept. Use a default if one isn't provided. This would be scoped at the process level since it's unlikely that multiple instances of libgssapi unless someone puts some effort in with dlopen/dlsym. > {code} > class LockProvider > { > virtual ~LockProvider() {} > // allow client application to deny access to the lock > virtual bool try_lock() = 0; > virtual void unlock() = 0; > } > {code} -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscribe@hadoop.apache.org For additional commands, e-mail: hdfs-issues-help@hadoop.apache.org