From dev-return-355310-archive-asf-public=cust-asf.ponee.io@lucene.apache.org Wed May 8 17:00:13 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 87A62180630 for ; Wed, 8 May 2019 19:00:13 +0200 (CEST) Received: (qmail 27711 invoked by uid 500); 8 May 2019 17:00:08 -0000 Mailing-List: contact dev-help@lucene.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@lucene.apache.org Delivered-To: mailing list dev@lucene.apache.org Received: (qmail 27630 invoked by uid 99); 8 May 2019 17:00:08 -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; Wed, 08 May 2019 17:00:08 +0000 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 EDB64E2B9D for ; Wed, 8 May 2019 17:00:07 +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 9749A25816 for ; Wed, 8 May 2019 17:00:07 +0000 (UTC) Date: Wed, 8 May 2019 17:00:07 +0000 (UTC) From: "Cao Manh Dat (JIRA)" To: dev@lucene.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Resolved] (SOLR-13445) Preferred replicas on nodes with same system properties as the query master MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 [ https://issues.apache.org/jira/browse/SOLR-13445?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Cao Manh Dat resolved SOLR-13445. --------------------------------- Resolution: Fixed Fix Version/s: 8.2 master (9.0) > Preferred replicas on nodes with same system properties as the query master > --------------------------------------------------------------------------- > > Key: SOLR-13445 > URL: https://issues.apache.org/jira/browse/SOLR-13445 > Project: Solr > Issue Type: Improvement > Security Level: Public(Default Security Level. Issues are Public) > Reporter: Cao Manh Dat > Assignee: Cao Manh Dat > Priority: Major > Fix For: master (9.0), 8.2 > > Attachments: SOLR-13445.patch, SOLR-13445.patch, SOLR-13445.patch > > > Currently, Solr chooses a random replica for each shard to fan out the query request. However, this presents a problem when running Solr in multiple availability zones. > If one availability zone fails then it affects all Solr nodes because they will try to connect to Solr nodes in the failed availability zone until the request times out. This can lead to a build up of threads on each Solr node until the node goes out of memory. This results in a cascading failure. > This issue try to solve this problem by adding > * another shardPreference param named {{node.sysprop}}, so the query will be routed to nodes with same defined system properties as the current one. > * default shardPreferences on the whole cluster, which will be stored in {{/clusterprops.json}}. > * a cacher for fetching other nodes system properties whenever /live_nodes get changed. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscribe@lucene.apache.org For additional commands, e-mail: dev-help@lucene.apache.org