Return-Path: X-Original-To: archive-asf-public-internal@cust-asf2.ponee.io Delivered-To: archive-asf-public-internal@cust-asf2.ponee.io Received: from cust-asf.ponee.io (cust-asf.ponee.io [163.172.22.183]) by cust-asf2.ponee.io (Postfix) with ESMTP id 2B642200B29 for ; Thu, 16 Jun 2016 07:40:08 +0200 (CEST) Received: by cust-asf.ponee.io (Postfix) id 2A0E5160A4D; Thu, 16 Jun 2016 05:40:08 +0000 (UTC) Delivered-To: archive-asf-public@cust-asf.ponee.io Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by cust-asf.ponee.io (Postfix) with SMTP id 76911160A60 for ; Thu, 16 Jun 2016 07:40:07 +0200 (CEST) Received: (qmail 87586 invoked by uid 500); 16 Jun 2016 05:40:06 -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 87150 invoked by uid 99); 16 Jun 2016 05:40:06 -0000 Received: from arcas.apache.org (HELO arcas) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 16 Jun 2016 05:40:06 +0000 Received: from arcas.apache.org (localhost [127.0.0.1]) by arcas (Postfix) with ESMTP id 0F20F2C1F64 for ; Thu, 16 Jun 2016 05:40:06 +0000 (UTC) Date: Thu, 16 Jun 2016 05:40:06 +0000 (UTC) From: "Vinitha Reddy Gankidi (JIRA)" To: hdfs-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Assigned] (HDFS-10301) BlockReport retransmissions may lead to storages falsely being declared zombie if storage report processing happens out of order MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 archived-at: Thu, 16 Jun 2016 05:40:08 -0000 [ https://issues.apache.org/jira/browse/HDFS-10301?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Vinitha Reddy Gankidi reassigned HDFS-10301: -------------------------------------------- Assignee: Vinitha Reddy Gankidi (was: Colin Patrick McCabe) > BlockReport retransmissions may lead to storages falsely being declared zombie if storage report processing happens out of order > -------------------------------------------------------------------------------------------------------------------------------- > > Key: HDFS-10301 > URL: https://issues.apache.org/jira/browse/HDFS-10301 > Project: Hadoop HDFS > Issue Type: Bug > Components: namenode > Affects Versions: 2.6.1 > Reporter: Konstantin Shvachko > Assignee: Vinitha Reddy Gankidi > Priority: Critical > Attachments: HDFS-10301.002.patch, HDFS-10301.003.patch, HDFS-10301.004.patch, HDFS-10301.005.patch, HDFS-10301.006.patch, HDFS-10301.01.patch, HDFS-10301.sample.patch, zombieStorageLogs.rtf > > > When NameNode is busy a DataNode can timeout sending a block report. Then it sends the block report again. Then NameNode while process these two reports at the same time can interleave processing storages from different reports. This screws up the blockReportId field, which makes NameNode think that some storages are zombie. Replicas from zombie storages are immediately removed, causing missing blocks. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscribe@hadoop.apache.org For additional commands, e-mail: hdfs-issues-help@hadoop.apache.org