Return-Path: X-Original-To: apmail-hadoop-common-issues-archive@minotaur.apache.org Delivered-To: apmail-hadoop-common-issues-archive@minotaur.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 40AD2181FE for ; Wed, 26 Aug 2015 18:13:47 +0000 (UTC) Received: (qmail 7430 invoked by uid 500); 26 Aug 2015 18:13:46 -0000 Delivered-To: apmail-hadoop-common-issues-archive@hadoop.apache.org Received: (qmail 7389 invoked by uid 500); 26 Aug 2015 18:13:46 -0000 Mailing-List: contact common-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: common-issues@hadoop.apache.org Delivered-To: mailing list common-issues@hadoop.apache.org Received: (qmail 7373 invoked by uid 99); 26 Aug 2015 18:13:46 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 26 Aug 2015 18:13:46 +0000 Date: Wed, 26 Aug 2015 18:13:46 +0000 (UTC) From: "Gaurav Kanade (JIRA)" To: common-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HADOOP-12334) Change Mode Of Copy Operation of HBase WAL Archiving to bypass Azure Storage Throttling after retries 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/HADOOP-12334?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14715260#comment-14715260 ] Gaurav Kanade commented on HADOOP-12334: ---------------------------------------- [~onpduo] [~cnauroth] [~dchickabasapa] Please take a look > Change Mode Of Copy Operation of HBase WAL Archiving to bypass Azure Storage Throttling after retries > ----------------------------------------------------------------------------------------------------- > > Key: HADOOP-12334 > URL: https://issues.apache.org/jira/browse/HADOOP-12334 > Project: Hadoop Common > Issue Type: Improvement > Components: tools > Reporter: Gaurav Kanade > Assignee: Gaurav Kanade > Attachments: HADOOP-12334.01.patch > > > HADOOP-11693 mitigated the problem of HMaster aborting regionserver due to Azure Storage Throttling event during HBase WAL archival. The way this was achieved was by applying an intensive exponential retry when throttling occurred. > As a second level of mitigation we will change the mode of copy operation if the operation fails even after all retries -i.e. we will do a client side copy of the blob and then copy it back to destination. This operation will not be subject to throttling and hence should provide a stronger mitigation. However it is more expensive, hence we do it only in the case we fail after all retries -- This message was sent by Atlassian JIRA (v6.3.4#6332)