From yarn-issues-return-139975-archive-asf-public=cust-asf.ponee.io@hadoop.apache.org Sat Mar 17 19:03:04 2018 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 [140.211.11.3]) by mx-eu-01.ponee.io (Postfix) with SMTP id CDE25180652 for ; Sat, 17 Mar 2018 19:03:03 +0100 (CET) Received: (qmail 56360 invoked by uid 500); 17 Mar 2018 18:03:02 -0000 Mailing-List: contact yarn-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Delivered-To: mailing list yarn-issues@hadoop.apache.org Received: (qmail 56349 invoked by uid 99); 17 Mar 2018 18:03:02 -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; Sat, 17 Mar 2018 18:03:02 +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 63BDB180404 for ; Sat, 17 Mar 2018 18:03:02 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd3-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: -110.311 X-Spam-Level: X-Spam-Status: No, score=-110.311 tagged_above=-999 required=6.31 tests=[ENV_AND_HDR_SPF_MATCH=-0.5, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01, USER_IN_DEF_SPF_WL=-7.5, USER_IN_WHITELIST=-100] autolearn=disabled Received: from mx1-lw-us.apache.org ([10.40.0.8]) by localhost (spamd3-us-west.apache.org [10.40.0.10]) (amavisd-new, port 10024) with ESMTP id 2G7ERUrWEhCl for ; Sat, 17 Mar 2018 18:03:01 +0000 (UTC) Received: from mailrelay1-us-west.apache.org (mailrelay1-us-west.apache.org [209.188.14.139]) by mx1-lw-us.apache.org (ASF Mail Server at mx1-lw-us.apache.org) with ESMTP id 3D8155F18A for ; Sat, 17 Mar 2018 18:03:01 +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 8EEFFE00A6 for ; Sat, 17 Mar 2018 18:03:00 +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 26BE52149D for ; Sat, 17 Mar 2018 18:03:00 +0000 (UTC) Date: Sat, 17 Mar 2018 18:03:00 +0000 (UTC) From: "Haibo Chen (JIRA)" To: yarn-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Created] (YARN-8042) Improve debugging on ATSv2 reader server MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 Haibo Chen created YARN-8042: -------------------------------- Summary: Improve debugging on ATSv2 reader server Key: YARN-8042 URL: https://issues.apache.org/jira/browse/YARN-8042 Project: Hadoop YARN Issue Type: Improvement Affects Versions: 3.0.0 Reporter: Haibo Chen It's been inconvenient to debug issues that happened on the read path. Typi= cally, a query sent from a client is parsed into a TimelineReaderContext, T= imelineEntityFilters=C2=A0 and TimelineDataToRetrieve=C2=A0 which are indep= endent of the underlying backend storage implementations.=C2=A0=C2=A0=C2=A0= Then the general ATSv2 building blocks are then translated into a SCAN and= GET query in HBase with specified row keys and filters. To facilitate easy debugging, additional debug level logging messages (idea= lly that can be enabled dynamically without restarting TimelineReaderServer= process) can be added at the boundary to narrow down the scope of investig= ation. A good example of this is logging the scan or get query before it is sent t= o HBase and the result after the query returns from HBase. YARN support fol= ks who are not necessarily HBase experts can present the debug messages to = HBase experts and get help. (I had to remotely connect to TimelineReaderSer= ver, set up breakpoints and get the hbase queries every time I suspect ther= e is a bug in HBase) =C2=A0 =C2=A0 =C2=A0 =C2=A0 -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: yarn-issues-unsubscribe@hadoop.apache.org For additional commands, e-mail: yarn-issues-help@hadoop.apache.org