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 DD53A9D76 for ; Wed, 8 Feb 2012 08:30:43 +0000 (UTC) Received: (qmail 80679 invoked by uid 500); 8 Feb 2012 08:30:43 -0000 Delivered-To: apmail-hbase-issues-archive@hbase.apache.org Received: (qmail 80464 invoked by uid 500); 8 Feb 2012 08:30:38 -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 80139 invoked by uid 99); 8 Feb 2012 08:30:25 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 08 Feb 2012 08:30:25 +0000 X-ASF-Spam-Status: No, hits=-2000.0 required=5.0 tests=ALL_TRUSTED,T_RP_MATCHES_RCVD X-Spam-Check-By: apache.org Received: from [140.211.11.116] (HELO hel.zones.apache.org) (140.211.11.116) by apache.org (qpsmtpd/0.29) with ESMTP; Wed, 08 Feb 2012 08:30:23 +0000 Received: from hel.zones.apache.org (hel.zones.apache.org [140.211.11.116]) by hel.zones.apache.org (Postfix) with ESMTP id 5E48CADDEB for ; Wed, 8 Feb 2012 08:30:03 +0000 (UTC) Date: Wed, 8 Feb 2012 08:30:03 +0000 (UTC) From: "Phabricator (Updated) (JIRA)" To: issues@hbase.apache.org Message-ID: <1943902181.13728.1328689803387.JavaMail.tomcat@hel.zones.apache.org> In-Reply-To: <155647929.29704.1324361611230.JavaMail.tomcat@hel.zones.apache.org> Subject: [jira] [Updated] (HBASE-5074) support checksums in HBase block cache 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-5074?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Phabricator updated HBASE-5074: ------------------------------- Attachment: D1521.5.patch dhruba updated the revision "[jira] [HBASE-5074] Support checksums in HBase block cache". Reviewers: mbautin Incorporated review comments from Ted. REVISION DETAIL https://reviews.facebook.net/D1521 AFFECTED FILES src/test/java/org/apache/hadoop/hbase/HBaseTestingUtility.java src/test/java/org/apache/hadoop/hbase/regionserver/TestSplitTransaction.java src/test/java/org/apache/hadoop/hbase/regionserver/CreateRandomStoreFile.java src/test/java/org/apache/hadoop/hbase/regionserver/handler/TestCloseRegionHandler.java src/test/java/org/apache/hadoop/hbase/regionserver/TestFSErrorsExposed.java src/test/java/org/apache/hadoop/hbase/regionserver/HFileReadWriteTest.java src/test/java/org/apache/hadoop/hbase/regionserver/TestCompoundBloomFilter.java src/test/java/org/apache/hadoop/hbase/regionserver/TestHRegion.java src/test/java/org/apache/hadoop/hbase/regionserver/TestStoreFile.java src/test/java/org/apache/hadoop/hbase/io/hfile/TestHFileBlock.java src/test/java/org/apache/hadoop/hbase/io/hfile/TestChecksum.java src/test/java/org/apache/hadoop/hbase/io/hfile/TestCacheOnWrite.java src/test/java/org/apache/hadoop/hbase/io/hfile/TestHFileReaderV1.java src/test/java/org/apache/hadoop/hbase/io/hfile/TestFixedFileTrailer.java src/test/java/org/apache/hadoop/hbase/io/hfile/CacheTestUtils.java src/test/java/org/apache/hadoop/hbase/io/hfile/TestHFileBlockIndex.java src/test/java/org/apache/hadoop/hbase/io/hfile/TestHFileWriterV2.java src/test/java/org/apache/hadoop/hbase/io/hfile/TestHFileDataBlockEncoder.java src/test/java/org/apache/hadoop/hbase/io/hfile/TestHFileBlockCompatibility.java src/test/java/org/apache/hadoop/hbase/util/MockRegionServerServices.java src/main/java/org/apache/hadoop/hbase/HConstants.java src/main/java/org/apache/hadoop/hbase/util/ChecksumType.java src/main/java/org/apache/hadoop/hbase/util/HFileSystem.java src/main/java/org/apache/hadoop/hbase/util/ChecksumByteArrayOutputStream.java src/main/java/org/apache/hadoop/hbase/util/CompoundBloomFilter.java src/main/java/org/apache/hadoop/hbase/util/ChecksumFactory.java src/main/java/org/apache/hadoop/hbase/regionserver/handler/OpenRegionHandler.java src/main/java/org/apache/hadoop/hbase/regionserver/RegionServerServices.java src/main/java/org/apache/hadoop/hbase/regionserver/metrics/RegionServerMetrics.java src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java src/main/java/org/apache/hadoop/hbase/regionserver/StoreFile.java src/main/java/org/apache/hadoop/hbase/regionserver/Store.java src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java src/main/java/org/apache/hadoop/hbase/mapreduce/LoadIncrementalHFiles.java src/main/java/org/apache/hadoop/hbase/io/hfile/ChecksumUtil.java src/main/java/org/apache/hadoop/hbase/io/hfile/HFileBlock.java src/main/java/org/apache/hadoop/hbase/io/hfile/HFileDataBlockEncoderImpl.java src/main/java/org/apache/hadoop/hbase/io/hfile/HFileReaderV2.java src/main/java/org/apache/hadoop/hbase/io/hfile/HFile.java src/main/java/org/apache/hadoop/hbase/io/hfile/HFileDataBlockEncoder.java src/main/java/org/apache/hadoop/hbase/io/hfile/HFileWriterV2.java src/main/java/org/apache/hadoop/hbase/io/hfile/AbstractHFileReader.java src/main/java/org/apache/hadoop/hbase/io/hfile/NoOpDataBlockEncoder.java src/main/java/org/apache/hadoop/hbase/io/hfile/HFileReaderV1.java src/main/java/org/apache/hadoop/hbase/io/hfile/FixedFileTrailer.java src/main/java/org/apache/hadoop/hbase/io/hfile/HFileWriterV1.java > support checksums in HBase block cache > -------------------------------------- > > Key: HBASE-5074 > URL: https://issues.apache.org/jira/browse/HBASE-5074 > Project: HBase > Issue Type: Improvement > Components: regionserver > Reporter: dhruba borthakur > Assignee: dhruba borthakur > Attachments: D1521.1.patch, D1521.1.patch, D1521.2.patch, D1521.2.patch, D1521.3.patch, D1521.3.patch, D1521.4.patch, D1521.4.patch, D1521.5.patch, D1521.5.patch > > > The current implementation of HDFS stores the data in one block file and the metadata(checksum) in another block file. This means that every read into the HBase block cache actually consumes two disk iops, one to the datafile and one to the checksum file. This is a major problem for scaling HBase, because HBase is usually bottlenecked on the number of random disk iops that the storage-hardware offers. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira