Return-Path: X-Original-To: apmail-hadoop-hdfs-issues-archive@minotaur.apache.org Delivered-To: apmail-hadoop-hdfs-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 823A61064B for ; Thu, 30 Jan 2014 19:02:17 +0000 (UTC) Received: (qmail 67202 invoked by uid 500); 30 Jan 2014 19:02:12 -0000 Delivered-To: apmail-hadoop-hdfs-issues-archive@hadoop.apache.org Received: (qmail 67039 invoked by uid 500); 30 Jan 2014 19:02:10 -0000 Mailing-List: contact hdfs-issues-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: hdfs-issues@hadoop.apache.org Delivered-To: mailing list hdfs-issues@hadoop.apache.org Received: (qmail 66936 invoked by uid 99); 30 Jan 2014 19:02:09 -0000 Received: from arcas.apache.org (HELO arcas.apache.org) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 30 Jan 2014 19:02:09 +0000 Date: Thu, 30 Jan 2014 19:02:09 +0000 (UTC) From: "Jing Zhao (JIRA)" To: hdfs-issues@hadoop.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Updated] (HDFS-5843) DFSClient.getFileChecksum() throws IOException if checksum is disabled 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/HDFS-5843?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Jing Zhao updated HDFS-5843: ---------------------------- Assignee: Laurent Goujon > DFSClient.getFileChecksum() throws IOException if checksum is disabled > ---------------------------------------------------------------------- > > Key: HDFS-5843 > URL: https://issues.apache.org/jira/browse/HDFS-5843 > Project: Hadoop HDFS > Issue Type: Bug > Components: datanode > Reporter: Laurent Goujon > Assignee: Laurent Goujon > Attachments: hdfs-5843.patch > > > If a file is created with checksum disabled (using {{ChecksumOpt.disabled()}} for example), calling {{FileSystem.getFileChecksum()}} throws the following IOException: > {noformat} > java.io.IOException: Fail to get block MD5 for BP-341493254-192.168.1.10-1390888724459:blk_1073741825_1001 > at org.apache.hadoop.hdfs.DFSClient.getFileChecksum(DFSClient.java:1965) > at org.apache.hadoop.hdfs.DFSClient.getFileChecksum(DFSClient.java:1771) > at org.apache.hadoop.hdfs.DistributedFileSystem$21.doCall(DistributedFileSystem.java:1186) > at org.apache.hadoop.hdfs.DistributedFileSystem$21.doCall(DistributedFileSystem.java:1) > at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81) > at org.apache.hadoop.hdfs.DistributedFileSystem.getFileChecksum(DistributedFileSystem.java:1194) > [...] > {noformat} > From the logs, the datanode is doing some wrong arithmetics because of the crcPerBlock: > {noformat} > 2014-01-27 21:58:46,329 ERROR datanode.DataNode (DataXceiver.java:run(225)) - 127.0.0.1:52398:DataXceiver error processing BLOCK_CHECKSUM operation src: /127.0.0.1:52407 dest: /127.0.0.1:52398 > java.lang.ArithmeticException: / by zero > at org.apache.hadoop.hdfs.server.datanode.DataXceiver.blockChecksum(DataXceiver.java:658) > at org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.opBlockChecksum(Receiver.java:169) > at org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.processOp(Receiver.java:77) > at org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:221) > at java.lang.Thread.run(Thread.java:695) > {noformat} -- This message was sent by Atlassian JIRA (v6.1.5#6160)