From hdfs-dev-return-40857-archive-asf-public=cust-asf.ponee.io@hadoop.apache.org Mon Jan 13 20:07:05 2020 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 A56DC18064E for ; Mon, 13 Jan 2020 21:07:04 +0100 (CET) Received: (qmail 85148 invoked by uid 500); 13 Jan 2020 20:07:03 -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 84966 invoked by uid 99); 13 Jan 2020 20:07:03 -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, 13 Jan 2020 20:07:03 +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 69727E315D for ; Mon, 13 Jan 2020 20:07:01 +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 37495780905 for ; Mon, 13 Jan 2020 20:07:00 +0000 (UTC) Date: Mon, 13 Jan 2020 20:07:00 +0000 (UTC) From: "Konstantin Shvachko (Jira)" To: hdfs-dev@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Created] (HDFS-15118) [SBN Read] Slow clients when Observer reads are enabled but there are no Observers on the cluster. MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 Konstantin Shvachko created HDFS-15118: ------------------------------------------ Summary: [SBN Read] Slow clients when Observer reads are enabled but there are no Observers on the cluster. Key: HDFS-15118 URL: https://issues.apache.org/jira/browse/HDFS-15118 Project: Hadoop HDFS Issue Type: Bug Components: hdfs-client Affects Versions: 2.10.0 Reporter: Konstantin Shvachko We see substantial degradation in performance of HDFS clients, when Observer reads are enabled via {{ObserverReadProxyProvider}}, but there are no ObserverNodes on the cluster. -- 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