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 CEB8F200D5D for ; Wed, 20 Dec 2017 07:35:09 +0100 (CET) Received: by cust-asf.ponee.io (Postfix) id CCE88160C15; Wed, 20 Dec 2017 06:35:09 +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 1D40D160C0A for ; Wed, 20 Dec 2017 07:35:08 +0100 (CET) Received: (qmail 65211 invoked by uid 500); 20 Dec 2017 06:35:03 -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 65200 invoked by uid 99); 20 Dec 2017 06:35:03 -0000 Received: from pnap-us-west-generic-nat.apache.org (HELO spamd3-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 20 Dec 2017 06:35:03 +0000 Received: from localhost (localhost [127.0.0.1]) by spamd3-us-west.apache.org (ASF Mail Server at spamd3-us-west.apache.org) with ESMTP id B964D1807B8 for ; Wed, 20 Dec 2017 06:35:02 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd3-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: -100.002 X-Spam-Level: X-Spam-Status: No, score=-100.002 tagged_above=-999 required=6.31 tests=[RCVD_IN_DNSWL_NONE=-0.0001, RP_MATCHES_RCVD=-0.001, SPF_PASS=-0.001, USER_IN_WHITELIST=-100] autolearn=disabled Received: from mx1-lw-eu.apache.org ([10.40.0.8]) by localhost (spamd3-us-west.apache.org [10.40.0.10]) (amavisd-new, port 10024) with ESMTP id 4AohrCa3wEp1 for ; Wed, 20 Dec 2017 06:35:02 +0000 (UTC) Received: from mailrelay1-us-west.apache.org (mailrelay1-us-west.apache.org [209.188.14.139]) by mx1-lw-eu.apache.org (ASF Mail Server at mx1-lw-eu.apache.org) with ESMTP id 76E8F5F473 for ; Wed, 20 Dec 2017 06:35:01 +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 B2DCEE0E28 for ; Wed, 20 Dec 2017 06:35:00 +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 31449240E6 for ; Wed, 20 Dec 2017 06:35:00 +0000 (UTC) Date: Wed, 20 Dec 2017 06:35:00 +0000 (UTC) From: "Xiao Chen (JIRA)" To: hdfs-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (HDFS-12946) Add a tool to check rack configuration against EC policies MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 archived-at: Wed, 20 Dec 2017 06:35:10 -0000 [ https://issues.apache.org/jira/browse/HDFS-12946?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Xiao Chen updated HDFS-12946: ----------------------------- Attachment: HDFS-12946.01.patch > Add a tool to check rack configuration against EC policies > ---------------------------------------------------------- > > Key: HDFS-12946 > URL: https://issues.apache.org/jira/browse/HDFS-12946 > Project: Hadoop HDFS > Issue Type: Improvement > Components: erasure-coding > Reporter: Xiao Chen > Assignee: Xiao Chen > Attachments: HDFS-12946.01.patch > > > From testing we have seen setups with problematic racks / datanodes that would not suffice basic EC usages. These are usually found out only after the tests failed. > We should provide a way to check this beforehand. > Some scenarios: > - not enough datanodes compared to EC policy's highest data+parity number > - not enough racks to satisfy BPPRackFaultTolerant > - highly uneven racks to satisfy BPPRackFaultTolerant > - highly uneven racks (so that BPP's considerLoad logic may exclude some busy nodes on the rack, resulting in #2) -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscribe@hadoop.apache.org For additional commands, e-mail: hdfs-issues-help@hadoop.apache.org