From dev-return-72498-archive-asf-public=cust-asf.ponee.io@zookeeper.apache.org Thu Aug 23 08:37:08 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 C7C0B18061A for ; Thu, 23 Aug 2018 08:37:07 +0200 (CEST) Received: (qmail 93348 invoked by uid 500); 23 Aug 2018 06:37:06 -0000 Mailing-List: contact dev-help@zookeeper.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@zookeeper.apache.org Delivered-To: mailing list dev@zookeeper.apache.org Received: (qmail 93337 invoked by uid 99); 23 Aug 2018 06:37:06 -0000 Received: from pnap-us-west-generic-nat.apache.org (HELO spamd1-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 23 Aug 2018 06:37:06 +0000 Received: from localhost (localhost [127.0.0.1]) by spamd1-us-west.apache.org (ASF Mail Server at spamd1-us-west.apache.org) with ESMTP id 26A31CA034 for ; Thu, 23 Aug 2018 06:37:06 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd1-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: -110.301 X-Spam-Level: X-Spam-Status: No, score=-110.301 tagged_above=-999 required=6.31 tests=[ENV_AND_HDR_SPF_MATCH=-0.5, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, 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 (spamd1-us-west.apache.org [10.40.0.7]) (amavisd-new, port 10024) with ESMTP id iL7J69t5SW2e for ; Thu, 23 Aug 2018 06:37:01 +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 867905F3D0 for ; Thu, 23 Aug 2018 06:37:01 +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 080EEE0F4C for ; Thu, 23 Aug 2018 06:37:01 +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 35E2F246A3 for ; Thu, 23 Aug 2018 06:37:00 +0000 (UTC) Date: Thu, 23 Aug 2018 06:37:00 +0000 (UTC) From: "Fangmin Lv (JIRA)" To: dev@zookeeper.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Created] (ZOOKEEPER-3127) Fixing potential data inconsistency due to update last processed zxid with partial multi-op txn MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 Fangmin Lv created ZOOKEEPER-3127: ------------------------------------- Summary: Fixing potential data inconsistency due to update las= t processed zxid with partial multi-op txn Key: ZOOKEEPER-3127 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3127 Project: ZooKeeper Issue Type: Bug Components: server Affects Versions: 3.4.13, 3.5.4, 3.6.0 Reporter: Fangmin Lv Fix For: 3.6.0, 3.5.5, 3.4.14 Found this issue while=C2=A0checking the code for another issue, this is a = relatively rare case which we haven't seen it on prod so far. Currently, the lastProcessedZxid is updated when applying the first txn of = multi-op, if there is a snapshot in progress, it's possible that the zxid a= ssociated with the snapshot only include partial of the multi op. When loading snapshot, it will only load the txns after the zxid associated= with snapshot file, which could=C2=A0data inconsistency due to missing sub= txns. To avoid this, we only update the lastProcessedZxid when the whole multi-op= txn is applied to DataTree. -- This message was sent by Atlassian JIRA (v7.6.3#76005)