From Fedora Project Wiki
(Change Proposal ready for 2013-07-17 FESCo meeting (#1137))
(Change accepted en block on Jul 17 FESCo meeting (#1137))
Line 1,038: Line 1,038:




[[Category:ChangeReadyForFesco]]
[[Category:ChangeAcceptedF20]]
<!-- When your change proposal page is completed and ready for review and announcement -->
<!-- When your change proposal page is completed and ready for review and announcement -->
<!-- remove Category:ChangePageIncomplete and change it to Category:ChangeReadyForWrangler -->
<!-- remove Category:ChangePageIncomplete and change it to Category:ChangeReadyForWrangler -->

Revision as of 13:13, 18 July 2013


Apache Hadoop 2.x

Summary

Provide native Apache Hadoop packages.

Owner

Current status

  • Targeted release: Fedora 20
  • Last updated: 8 July 2013
  • Tracker bug: <will be assigned by the Wrangler>

Detailed Description

Apache Hadoop is a widely used, increasingly complete big data platform, with a strong open source community and growing ecosystem. The goal is to package and integrate the core of the Hadoop ecosystem for Fedora, allowing for immediate use and creating a base for the rest of the ecosystem.

Benefit to Fedora

The Apache Hadoop software will be packaged and integrated with Fedora. The core of the Hadoop ecosystem will be available with Fedora and provide a base for additional packages.

Scope

  • Proposal owners:
    • Note: target is Apache Hadoop 2.0.5-alpha
    • Package all dependencies needed for Apache Hadoop 2.x
    • Package the Apache Hadoop 2.x software
  • Other developers: N/A (not a System Wide Change)
  • Release engineering: N/A (not a System Wide Change)
  • Policies and guidelines: N/A (not a System Wide Change)

Upgrade/compatibility impact

N/A (not a System Wide Change)

How To Test

  1. Install the hadoop rpms with:
    • yum install hadoop-common hadoop-hdfs hadoop-libhdfs hadoop-mapreduce hadoop-mapreduce-examples hadoop-yarn
  2. Start the cluster by issuing:
    • systemctl start hadoop-namenode hadoop-datanode hadoop-nodemanager hadoop-resourcemanager
  3. Initialize the HDFS directories:
    • hdfs-create-dirs
  4. Create a directory for the user running the tests:
    1. runuser hdfs -s /bin/bash /bin/bash -c "hadoop fs -mkdir /user/<name>"
    2. runuser hdfs -s /bin/bash /bin/bash -c "hadoop fs -chown <name> /user/<name>"
  5. The user from the previous step can run jobs like the following mapreduce examples:
    • hadoop jar /usr/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.0.5-alpha.jar pi 10 1000000
    • hadoop jar /usr/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.0.5-alpha.jar randomwriter out
    • These three have an order they need to be run in:
      1. hadoop jar /usr/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.0.5-alpha.jar teragen 100 gendata
      2. hadoop jar /usr/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.0.5-alpha.jar terasort gendata 100
      3. hadoop jar /usr/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.0.5-alpha.jar teravalidate gendata reportdata

User Experience

N/A (not a System Wide Change)

Dependencies

N/A (not a System Wide Change)

Contingency Plan

  • Contingency mechanism: N/A (not a System Wide Change)
  • Contingency deadline: N/A (not a System Wide Change)
  • Blocks release? N/A (not a System Wide Change), Yes/No

Documentation

Release Notes

  • TODO

Effort details

People involved

Name IRC Focus Additional
Matthew Farrellee mattf keeping track, integration testing UTC-5
Peter MacKinnon pmackinn packaging, testing UTC-5
Rob Rati rsquared packaging UTC-5
Timothy St. Clair tstclair config, upstream tracking UTC-6
Sam Kottler skottler packaging UTC-5
Gil Cattaneo gil packaging UTC+1
Christopher Meng cicku packaging, testing UTC+8

Detailed status

  • Last updated: 11 July 2013
  • Percentage of completion
    • Dependencies available in Fedora (missing since project initiation): 100%
    • Adaptation of Hadoop 2.0.5a source via patches: 100%
    • Hadoop spec completion: 95%
  • Test suite (Updated to 2.0.5a; all skips are from upstream)
Module Tests Failures Errors Skipped
hadoop-auth 48 0 0 0
hadoop-common 1828 1 0 6
hadoop-hdfs 1644 2 5 6
hadoop-hdfs-httpfs 283 0 0 0
hadoop-hdfs-bkjournal 31 0 1 0
hadoop-yarn-common 109 0 0 0
hadoop-yarn-client 17 0 0 0
hadoop-yarn-server-common 3 0 0 0
hadoop-yarn-server-nodemanager 153 0 1 0
hadoop-yarn-server-web-proxy 9 0 0 0
hadoop-yarn-server-resourcemanager 277 0 0 0
hadoop-yarn-server-tests 7 0 0 0
hadoop-yarn-applications-distributedshell 2 0 0 0
hadoop-yarn-applications-unmanaged-am-launcher 1 0 0 0
hadoop-mapreduce-examples 11 0 0 1
hadoop-mapreduce-client-core 56 0 0 0
hadoop-mapreduce-client-common 43 0 0 0
hadoop-mapreduce-client-shuffle 4 0 0 0
hadoop-mapreduce-client-app 210 2 0 0
hadoop-mapreduce-client-jobclient 443 0 3 12
hadoop-mapreduce-client-hs 128 2 0 0
hadoop-mapreduce-client-hs-plugins 1 0 0 0
hadoop-streaming 55 0 6 0
hadoop-distcp 112 0 0 0
hadoop-archives 2 0 0 0
hadoop-rumen 3 0 0 1
hadoop-gridmix 44 0 0 0
hadoop-datajoin 1 0 0 0
hadoop-extras 20 0 0 1

Approach

We are taking an iterative, depth-first approach to packaging. We do not have all the dependencies mapped out ahead of time. Dependencies are being tabulated into two groups:

  1. missing - the dependency being requested from a hadoop-common pom has not yet been packaged, reviewed or generated into fedora repos
  2. broken - the dependency requested is out of date with current fedora versions, and patches must be developed for inclusion in a hadoop rpm build that address any build, API or source code deltas

Note that a dependency may show up in both of these tables.

Anyone who wants to help should find an available dependency below, edit the table changing the state to Active and packager to yourself.

If you are lucky enough to pick a dependency that itself has unpackaged dependencies, identify the sub-dependencies and add them to the bottom of the Dependencies table below, change your current dependency to Blocked and repeat.

If your dependency is already packaged but the version is incompatible, contact the package owner and resolve the incompatibility in a mutually satisfactory way. For instance:

  • If the version available in Fedora is older, explore updating the package. If that is not possible, explore creating a package that includes a version in its name, e.g. pkgnameXY. Ultimately, the most recent version in Fedora should have the name pkgname while older versions have pkgnameXY. It may take a full Fedora release to rationalize package names. Make a note in the Dependencies table.
  • If the version you need is older than the packaged version, consider creating a patch to use the newer version. If a patch is not viable, proceed by packaging the dependency with a version in its name, e.g. pkgnameXY. Make a note in the Dependencies table.

There is tattletale dependency graph data for both the baseline branch and the fedora development branch.

Running and debugging the unit test suite is discussed in the test suite section below and results are maintained in the test suite results table.

You will run into situations where the Apache Hadoop source needs to be patched to handle the Fedora version of a dependency. Those patches are candidates to propose upstream, are tracked in the upstream patch tracking table, and maintained in the source repositories below. Any changes that are required to conform to Fedora's packaging guidelines or deal with a package naming issue should be contained to the hadoop spec file.

In handling patches, the intention of this process is to isolate changes to a single dependency so patches can be created that can be consumed upstream. It is important that changes to the source be isolated to 1 dependency and the changes must be self-contained. A dependency is not necessarily a single jar file. Changes to a dependency should entail everything needed to use the jar files from a later release of the dependency.

Source repositories:

Dependency Branches

All code/build changes to Apache Hadoop should be performed on a branch in the hadoop-common repo that should be based off the

branch-2.0.5-alpha

branch and should following this naming convention:

fedora-patch-<dependency>

Where <dependency> is the name of the dependency being worked on. Changes to this branch should ONLY relate to the dependency being worked on. Do not include the dependency version in the branch name. These branches will be updated as needed because of Fedora or Hadoop updates until they are accepted upstream by Apache Hadoop. Not having the dependency version allows the branch to move from version 1->2->3 without confusion if it is required before accepted upstream.

Integration Branch

An integration branch should be created in the hadoop-common repository that corresponds with the release version being packaged using the following naming convention:

fedora-<version>-integration

where <ver> is the hadoop version being packaged. All branches containing changes that have not yet been accepted upstream should be merged to the integration branch and the result should pass the build and all tests. Once this is complete a patch should be generated and pushed to the hadoop-rpm repository.


Test suite

In order to attempt to run any part of the test suite, you must first build the components (F18,F19):

  1. git clone git://github.com/fedora-bigdata/hadoop-common.git
  2. cd hadoop-common
  3. git checkout -b fedora-2.0.5-alpha-test origin/fedora-2.0.5-alpha-test
  4. mvn-rpmbuild -Pdist,native -DskipTest -DskipTests -DskipIT install

If you are interested in the whole ball of wax then

  • mvn-rpmbuild -X -Dorg.apache.jasper.compiler.disablejsr199=true[1] test

and go mow a football field or knit a sweater. Note that this could still result in spurious failures. Add -Dmaven.test.failure.ignore=true to the above line if you're seeking just test errors.

The fedora-2.0.5-alpha-test branch excludes identified consistently failing tests. You can edit your copy of hadoop-project/pom.xml to bring any of them back into play.

If you are interested in investigating specific failures such as active ones from the table above then target the module, test class, and even method as you see fit:

  • mvn-rpmbuild -X -pl :hadoop-common test -Dtest=TestSSLHttpServer#testEcho

All your hard work results in a patch? Great! Hit a contributor up with it and we'll review and apply if everything looks cool.

This option is required to ensure the test of TestHttpServer#testContentTypes passes due to the use of glassfish JSP support.


Dependencies

Missing dependency legend
State Notes
Available free for someone to take
Active dependency is actively being packaged if missing, or patch is being developed or tested for inclusion in hadoop-common build
Blocked pending packages for dependencies
Review under review, include link to review BZ
Complete woohoo!
Missing Dependencies
Project State Review BZ Packager Notes
hadoop Active rrati,pmackinn
bookkeeper Complete RHBZ #948589 gil Version 4.0 requested. packaged 4.2.1. Patch: BOOKKEEPER-598
glassfish-gmbal Complete RHBZ #859112 gil F18 build
glassfish-management-api Complete RHBZ #859110 gil F18 build
grizzly Complete RHBZ #859114 gil Only for F20 for now. Cause: missing glassfish-servlet-api on F18 and F19.
groovy Complete RHBZ #858127 gil 1.5 requested but 1.8 packaged in fedora. Possible moving forward 1.8 series will be known as groovy18 and groovy will be 2.x.
jersey Complete RHBZ #825347 gil F18 build Should be rebuilt with grizzly2 support enabled.
jets3t Complete RHBZ #847109 gil
jspc-compiler Complete RHBZ #960720 pmackinn Passes preliminary overall hadoop-common compilation/testing.
kfs Review RHBZ #960728 pmackinn kfs has become Quantcast qfs. No longer a dependency in 2.0.5-beta & >
maven-native Complete RHBZ #864084 gil Needs patch to build with java7. NOTE: javac target/source is already set by mojo.java.target option
zookeeper Complete RHBZ #823122 gil requires jtoaster
Broken Dependencies
Project Packager Notes
ant Version 1.6 requested, 1.8 currently packaged in Fedora. Needs to be inspected for API/functional incompatibilities(?)
apache-commons-collections pmackinn Java import compilation error with existing package. Patches for hadoop-common being tracked at https://github.com/fedora-bigdata/hadoop-common/tree/fedora-patch-collections
apache-commons-math pmackinn Current apache-commons-math uses math3 in pom instead of math, and API changes in code. Patches for hadoop-common being tracked at https://github.com/fedora-bigdata/hadoop-common/tree/fedora-patch-math
cglib pmackinn Missing an explicit dep which old dep chain didn't need.. Patches for hadoop-common being tracked at https://github.com/fedora-bigdata/hadoop-common/tree/fedora-patch-cglib
ecj rrati Need ecj version ecj-4.2.1-6 or later to resolve a dependency lookup issue
gmaven gil Version 1.0 requested, available 1.4 (but has broken deps) RHBZ #914056
hadoop-hdfs pmackinn glibc link error in hdfs native build. Patch for hadoop-common being tracked at https://github.com/fedora-bigdata/hadoop-common/tree/fedora-patch-cmake-hdfs
hsqldb tradej 1.8 in fedora, update to 2.2.9 in the process. API compatibility to be checked.
jersey pmackinn Needs jersey-servlet and version. Tracked at https://github.com/fedora-bigdata/hadoop-common/tree/fedora-patch-jersey
jets3t pmackinn Requires 0.6.1. With 0.9.x: hadoop-common Jets3tNativeFileSystemStore.java error: incompatible types S3ObjectsChunk chunk = s3Service.listObjectsChunked(bucket.getName(). Patches for hadoop-common being tracked at https://github.com/fedora-bigdata/hadoop-common/tree/fedora-patch-jets3t
jetty rrati jetty8 packaged in Fedora, but 6.x requested. 6 and 8 are incompatible. Patches tracked at https://github.com/fedora-bigdata/hadoop-common/tree/fedora-patch-jetty
slf4j pmackinn Package in fedora fails to match in dependency resolution. jcl104-over-slf4j dep in hadoop-common moved to jcl-over-slf4j as part of jspc/tomcat dep. Patch being tracked at https://github.com/fedora-bigdata/hadoop-common/tree/fedora-patch-jasper
tomcat-jasper pmackinn Version 5.5.x requested. Adaptations made for incumbent Tomcat 7 via patches at https://github.com/fedora-bigdata/hadoop-common/tree/fedora-patch-jasper. Reviewing fit as part of overall hadoop-common compilation/testing.

Test suite results

Unit Test Log (requires update for 2.0.5-alpha)
Module Name Baseline 2.0.2a/2.0.5a Fedora 2.0.2a Fedora 2.0.5a Tester Notes
hadoop-common TestDoAsEffectiveUser Pass Fail Pass pmackinn Failed in hadoop-common test suite but frequently succeeded as standalone. testRealUserSetup
hadoop-common TestRPCCompatibility Pass Fail Pass pmackinn Failed in hadoop-common test suite but frequently succeeded as standalone. testVersion2ClientVersion1Server: "expected:<3> but was:<-3>"
hadoop-common TestSSLHttpServer Pass Fixed Fixed pmackinn Required addition of SslContextFactory (new to Jetty 8+) setup in advance of SslConnector activation. Tracked here.
hadoop-hdfs TestWebHdfsFileSystemContract Pass Fail Pass pmackinn Spurious failures, infrequently reproducible.
hadoop-hdfs TestDelegationTokenForProxyUser Pass Fail Pass pmackinn testWebHdfsDoAs: "expected:<200> but was:<401>". Can no longer reproduce.
hadoop-hdfs TestEditLogRace Pass Fail Fail pmackinn testSaveRightBeforeSync
hadoop-hdfs TestHftpURLTimeouts Pass Fail Pass pmackinn testHsftpSocketTimeout -> intermittent test failure. Infrequently reproducible.
hadoop-hdfs TestNameNodeMetrics Fail Fail Pass pmackinn testCorruptBlock: Bad value for metric PendingReplicationBlocks expected:<0> but was:<1> in test suite. Was sporadic. Can no longer reproduce.
hadoop-hdfs TestCheckpoint Fail Fail Pass pmackinn testSecondaryHasVeryOutOfDateImage: Test resulted in an unexpected exit in test suite. Standalone OK. Can not reproduce.
hadoop-hdfs-bkjournal TestBookKeeperJournalManager Pass Fixed Fixed pmackinn testOneBookieFailure, testAllBookieFailure: BK 4.2 introduced "readonly" bookie which are enabled by default. This throws off test counts.
hadoop-hdfs-bkjournal TestBookKeeperAsHASharedDir Pass Fixed Fixed pmackinn See above re: readonly bookies.
hadoop-hdfs-bkjournal TestBookKeeperHACheckpoints Pass Fail Pass pmackinn testCheckpointWhenNoNewTransactionsHappened: Port in use: localhost:10001 (but not really). No longer reproducible.
hadoop-yarn-server-nodemanager TestNMWebServices* Pass Fail Review pmackinn All tests in error with java.lang.InstantiationException: something with the adaptation of GuiceServletConfig. Can be removed in test code and made to pass but would like deeper understanding of failure. Fedora test-only fix tracked here.
hadoop-yarn-server-nodemanager TestNMWebServicesApps,Containers Pass Fail Fixed pmackinn JSON assert logic needed fixing for new version of jettison. Tracked here.
hadoop-yarn-server-resourcemanager TestRMWebServices* Pass Fail Review pmackinn All tests in error with java.lang.InstantiationException on GuiceServletConfig: same guice-servlet problem as noted previously.
hadoop-yarn-server-resourcemanager TestRMWebServicesApps,Nodes Pass Fail Fixed pmackinn JSON assert logic needed fixing for new version of jettison. Tracked here.
hadoop-yarn-server-resourcemanager TestDelegationTokenRenewer Pass Fail Pass pmackinn Was testDTRenewalWithNoCancel: renew wasn't called as many times as expected expected:<1> but was:<2>. No longer reproducible.
hadoop-yarn-server-resourcemanager TestApplicationTokens Pass Fail Pass pmackinn Was testTokenExpiry: sporadic NPE. No longer reproducible.
hadoop-yarn-server-resourcemanager TestAppManager Pass Fail Pass pmackinn Was testRMAppSubmit,testRMAppSubmitWithQueueAndName: app event type is wrong before expected:<KILL> but was:<APP_REJECTED>; sporadic. No longer reproducible.
hadoop-yarn-client TestYarnClient Fail Fail Pass pmackinn Was testClientStop: Can only configure with YarnConfiguration. No longer reproducible.
hadoop-yarn-applications-unmanaged-am-launcher TestUnmanagedAMLauncher Fail Fail Pass pmackinn Seemed designed to execute once by successfully contacting an RM but repeatedly retries with: yarnAppState=FAILED, distributedFinalState=FAILED. No longer reproducible.
hadoop-mapreduce-client-app TestAMWebServices* Pass Fail Review pmackinn All tests in error with java.lang.InstantiationException on GuiceServletConfig: same guice-servlet problem as noted previously.
hadoop-mapreduce-client-hs TestHsWebServices* Pass Fail Review pmackinn All tests in error with java.lang.InstantiationException on GuiceServletConfig: same guice-servlet problem as noted previously.
hadoop-mapreduce-client-jobclient TestMiniMRProxyUser Pass Fail Pass pmackinn Was testValidProxyUser: assert fail. No longer reproducible.
hadoop-mapreduce-client-jobclient TestMRJobs Pass Fail Pass pmackinn Was testDistributedCache: assert fail. No longer reproducible.
hadoop-mapreduce-client-jobclient TestMapReduceLazyOutput Pass Fail Fail pmackinn testLazyOutput: assert fail
hadoop-mapreduce-client-jobclient TestEncryptedShuffle Pass Fail Pass pmackinn Was encryptedShuffleWithClientCerts,encryptedShuffleWithoutClientCerts: assert fail. No longer reproducible.
hadoop-mapreduce-client-jobclient TestJobName Pass Fail Pass pmackinn Was testComplexName,testComplexNameWithRegex: Job failed! No longer reproducible.
hadoop-mapreduce-client-jobclient TestJobSysDirWithDFS Pass Fail Fail pmackinn testWithDFS: Job failed!
hadoop-mapreduce-client-jobclient TestClusterMapReduceTestCase Pass Fail Pass pmackinn Was testMapReduce,testMapReduceRestarting: Job failed! No longer reproducible.
hadoop-mapreduce-client-jobclient TestLazyOutput Pass Fail Fail pmackinn testLazyOutput: Job failed!
hadoop-mapreduce-client-jobclient TestMiniMRWithDFSWithDistinctUsers Pass Fail Fail pmackinn testDistinctUsers: Job failed!. Fails more often than passes.
hadoop-mapreduce-client-jobclient TestRMNMInfo Pass Fail Pass pmackinn testRMNMInfoMissmatch:
hadoop-mapreduce-client-hs TestJobHistoryParsing Pass Fail Fail pmackinn testCountersForFailedTask: sporadic failures using OJ7, none with Oracle 1.6. Appears to be thread related, a task is assumed as killed with no counters based on having a null status.
hadoop-distcp TestCopyCommitter Pass Fail Pass pmackinn Was testNoCommitAction: Commit failed. No longer reproducible.

Tests are listed in the order of execution
Baseline: F18, maven 3.0.5, Oracle JDK 1.6u45

Upstream patch tracking

Currenly tracking against branch-2 @ https://github.com/timothysc/hadoop-common

Modification Tracking
Branch Commiter JIRA Target Status
fedora-patch-math pmackinn https://issues.apache.org/jira/browse/HADOOP-9594 2.1.0-beta PENDING REVIEW
fedora-patch-junit pmackinn https://issues.apache.org/jira/browse/HADOOP-9605 2.0.5-alpha COMMITTED
fedora-patch-javadocs rsquared https://issues.apache.org/jira/browse/HADOOP-9607 2.0.5-alpha COMMITTED
fedora-patch-collections pmackinn https://issues.apache.org/jira/browse/HADOOP-9610 2.1.0-beta PENDING REVIEW
fedora-patch-cglib pmackinn https://issues.apache.org/jira/browse/HADOOP-9611 2.1.0-beta PENDING REVIEW
fedora-patch-jersey pmackinn https://issues.apache.org/jira/browse/HADOOP-9613 2.1.0-beta PENDING REVIEW
fedora-patch-jets3t pmackinn https://issues.apache.org/jira/browse/HADOOP-9623 https://issues.apache.org/jira/browse/HADOOP-9680 2.1.0-beta PENDING REVIEW
fedora-patch-jetty pmackinn https://issues.apache.org/jira/browse/HADOOP-9650 2.1.0-beta RE-EVAL DUE TO F19 jetty-9
fedora-patch-jasper pmackinn https://lists.fedoraproject.org/pipermail/bigdata/2013-June/000026.html N/A Carrying Patch Until Further Notice
fedora-patch-cmake-hdfs pmackinn N/A 2.0.5-alpha Already Modified Upstream

Packager Resources

Packager tips

  • mvn-rpmbuild utility will ONLY resolve from system repo
  • mvn-local will resolve from system repo first then fallback to maven if unresolved
    • can be used to find the delta between system repo packages available and missing dependencies that can be viewed in the .m2 local maven repo (find ~/.m2/repository -name '*.jar')
  • -Dmaven.local.debug=true
    • reveals how JPP lookups are executed per dependency: useful for finding groupId,artifactId mismatches
  • -Dmaven.test.skip=true
    • tells maven to skip test runs AND compilation
    • useful for unblocking end-to-end build

An alternative to gmaven:

  • apply a patch with the following content where required
  • test support is not guaranteed, should not work.

     <plugin>
       <groupId>org.apache.maven.plugins</groupId>
       <artifactId>maven-antrun-plugin</artifactId>
       <version>1.7</version>
       <dependencies>
         <dependency>
           <groupId>org.codehaus.groovy</groupId>
           <artifactId>groovy</artifactId>
           <version>any</version>
         </dependency>
         <dependency>
           <groupId>antlr</groupId>
           <artifactId>antlr</artifactId>
           <version>any</version>
         </dependency>
         <dependency>
           <groupId>commons-cli</groupId>
           <artifactId>commons-cli</artifactId>
           <version>any</version>
         </dependency>
         <dependency>
           <groupId>asm</groupId>
           <artifactId>asm-all</artifactId>
           <version>any</version>
         </dependency>
         <dependency>
           <groupId>org.slf4j</groupId>
           <artifactId>slf4j-nop</artifactId>
           <version>any</version>
         </dependency>
       </dependencies>
       <executions>
         <execution>
           <id>compile</id>
           <phase>process-sources</phase>
           <configuration>
             <target>
               <mkdir dir="${basedir}/target/classes"/>
               <taskdef name="groovyc" classname="org.codehaus.groovy.ant.Groovyc">
                 <classpath refid="maven.plugin.classpath"/>
               </taskdef>
               <groovyc destdir="${project.build.outputDirectory}" srcdir="${basedir}/src/main" classpathref="maven.compile.classpath">
                 <javac source="1.5" target="1.5" debug="on"/>
               </groovyc>
             </target>
           </configuration>
           <goals>
             <goal>run</goal>
           </goals>
         </execution>
       </executions>
     </plugin>

YUM repositories

An RPM repository of dependencies already packaged and in, or heading towards, review state can be found here:

http://repos.fedorapeople.org/repos/rrati/hadoop/

Currently, only Fedora 18 x86_64 packages are available