From hdfs-issues-return-278396-archive-asf-public=cust-asf.ponee.io@hadoop.apache.org Tue Aug 20 00:13:02 2019 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 [207.244.88.153]) by mx-eu-01.ponee.io (Postfix) with SMTP id 43A61180669 for ; Tue, 20 Aug 2019 02:13:02 +0200 (CEST) Received: (qmail 46777 invoked by uid 500); 20 Aug 2019 00:13:01 -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 46694 invoked by uid 99); 20 Aug 2019 00:13:01 -0000 Received: from mailrelay1-us-west.apache.org (HELO mailrelay1-us-west.apache.org) (209.188.14.139) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 20 Aug 2019 00:13:01 +0000 Received: from jira-he-de.apache.org (static.172.67.40.188.clients.your-server.de [188.40.67.172]) by mailrelay1-us-west.apache.org (ASF Mail Server at mailrelay1-us-west.apache.org) with ESMTP id D89AEE3002 for ; Tue, 20 Aug 2019 00:13:00 +0000 (UTC) Received: from jira-he-de.apache.org (localhost.localdomain [127.0.0.1]) by jira-he-de.apache.org (ASF Mail Server at jira-he-de.apache.org) with ESMTP id 2F38E782234 for ; Tue, 20 Aug 2019 00:13:00 +0000 (UTC) Date: Tue, 20 Aug 2019 00:13:00 +0000 (UTC) From: "Lisheng Sun (Jira)" To: hdfs-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HDFS-14648) DeadNodeDetector state machine model MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 [ https://issues.apache.org/jira/browse/HDFS-14648?page=3Dcom.atlassian= .jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=3D1691= 0858#comment-16910858 ]=20 Lisheng Sun commented on HDFS-14648: ------------------------------------ hi=C2=A0[~linyiqun] [~jojochuang], [~hexiaoqiao] [~xkrogen] [~elgoiri]=C2= =A0Could you have time to review this patch? Thank you. > DeadNodeDetector state machine model > ------------------------------------ > > Key: HDFS-14648 > URL: https://issues.apache.org/jira/browse/HDFS-14648 > Project: Hadoop HDFS > Issue Type: Sub-task > Reporter: Lisheng Sun > Assignee: Lisheng Sun > Priority: Major > Attachments: HDFS-14648.001.patch, HDFS-14648.002.patch, HDFS-146= 48.003.patch > > > This Jira constructs=C2=A0DeadNodeDetector state machine model. =08The fu= nction it implements as follow: > # After DFSInputstream detects some DataNode die, it put in=C2=A0DeadNod= eDetector and share this information to others in the same DFSClient. The o= hter DFSInputstreams will not read this DataNode. > # DeadNodeDetector also have DFSInputstream reference relationships to e= ach DataNode. When=C2=A0DFSInputstream close,=C2=A0DeadNodeDetector also re= move this=C2=A0reference. If=C2=A0some=C2=A0DeadNode=C2=A0of DeadNodeDetect= or is not read by=C2=A0DFSInputstream, it also is removed from=C2=A0DeadNod= eDetector. -- This message was sent by Atlassian Jira (v8.3.2#803003) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscribe@hadoop.apache.org For additional commands, e-mail: hdfs-issues-help@hadoop.apache.org