From hdfs-dev-return-38698-archive-asf-public=cust-asf.ponee.io@hadoop.apache.org Mon Sep 30 10:54:03 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 08575180656 for ; Mon, 30 Sep 2019 12:54:02 +0200 (CEST) Received: (qmail 77725 invoked by uid 500); 30 Sep 2019 10:54:01 -0000 Mailing-List: contact hdfs-dev-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Delivered-To: mailing list hdfs-dev@hadoop.apache.org Received: (qmail 77703 invoked by uid 99); 30 Sep 2019 10:54:01 -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; Mon, 30 Sep 2019 10:54:01 +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 C93D1E2F0E for ; Mon, 30 Sep 2019 10:54:00 +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 19A13780749 for ; Mon, 30 Sep 2019 10:54:00 +0000 (UTC) Date: Mon, 30 Sep 2019 10:54:00 +0000 (UTC) From: "Xiaoqiao He (Jira)" To: hdfs-dev@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Created] (HDFS-14882) Consider DataNode load when #getBlockLocation MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 Xiaoqiao He created HDFS-14882: ---------------------------------- Summary: Consider DataNode load when #getBlockLocation Key: HDFS-14882 URL: https://issues.apache.org/jira/browse/HDFS-14882 Project: Hadoop HDFS Issue Type: Improvement Components: namenode Reporter: Xiaoqiao He Assignee: Xiaoqiao He Currently, we consider load of datanode when #chooseTarget for writer, however not consider it for reader. Thus, the process slot of datanode could be occupied by #BlockSender for reader, and disk/network will be busy workload, then meet some slow node exception. IIRC same case is reported times. Based on the fact, I propose to consider load for reader same as it did #chooseTarget for writer. -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-dev-unsubscribe@hadoop.apache.org For additional commands, e-mail: hdfs-dev-help@hadoop.apache.org