Return-Path: X-Original-To: apmail-hbase-issues-archive@www.apache.org Delivered-To: apmail-hbase-issues-archive@www.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id 221101919E for ; Sun, 27 Mar 2016 17:53:26 +0000 (UTC) Received: (qmail 61651 invoked by uid 500); 27 Mar 2016 17:53:25 -0000 Delivered-To: apmail-hbase-issues-archive@hbase.apache.org Received: (qmail 61599 invoked by uid 500); 27 Mar 2016 17:53:25 -0000 Mailing-List: contact issues-help@hbase.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Delivered-To: mailing list issues@hbase.apache.org Received: (qmail 61577 invoked by uid 99); 27 Mar 2016 17:53:25 -0000 Received: from arcas.apache.org (HELO arcas) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Sun, 27 Mar 2016 17:53:25 +0000 Received: from arcas.apache.org (localhost [127.0.0.1]) by arcas (Postfix) with ESMTP id 964D72C14FB for ; Sun, 27 Mar 2016 17:53:25 +0000 (UTC) Date: Sun, 27 Mar 2016 17:53:25 +0000 (UTC) From: "mac champion (JIRA)" To: issues@hbase.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HBASE-12733) High volume of "Couldn't find oldest seqNum" warnings if bypassing WAL 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/HBASE-12733?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15213560#comment-15213560 ] mac champion commented on HBASE-12733: -------------------------------------- I couldn't find this log statement or any relevant TODOs in FSHLog. Maybe this has been refactored away already? Can this be closed, or am I mistaken? > High volume of "Couldn't find oldest seqNum" warnings if bypassing WAL > ---------------------------------------------------------------------- > > Key: HBASE-12733 > URL: https://issues.apache.org/jira/browse/HBASE-12733 > Project: HBase > Issue Type: Bug > Reporter: Andrew Purtell > Priority: Minor > Labels: beginner > > When ingesting with the WAL bypassed, the RegionServer will log the following at every flush: > {noformat} > 2014-12-19 16:58:24,630 WARN [MemStoreFlusher.0] wal.FSHLog: Couldn't find oldest seqNum for the region we are about to flush: [86fc8c1374ebc29cc4a39a78966d48e0] > {noformat} > The WAL won't find a seqnum for the region until the first edit which does not bypass the WAL. That might not be for hundreds or thousands of flushes. This shouldn't be at WARN level since ingest with WAL bypass is legal if a bit unusual. It's concerning that the FSHLog code that emits that warning has a TODO above suggesting the warning should instead be an assertion. -- This message was sent by Atlassian JIRA (v6.3.4#6332)