Great probably the easiest option is to create CLASSPATH as below and just do
javac –cp $CLASSPATH –d .. HTH Mich Talebzadeh http://talebzadehmich.wordpress.com Author of the books "A Practitioner’s Guide to Upgrading to Sybase ASE 15", ISBN 978-0-9563693-0-7. co-author "Sybase Transact SQL Guidelines Best Practices", ISBN 978-0-9759693-0-4 Publications due shortly: Creating in-memory Data Grid for Trading Systems with Oracle TimesTen and Coherence Cache Oracle and Sybase, Concepts and Contrasts, ISBN: 978-0-9563693-1-4, volume one out shortly NOTE: The information in this email is proprietary and confidential. This message is for the designated recipient only, if you are not the intended recipient, you should destroy it immediately. Any information in this message shall not be understood as given or endorsed by Peridale Ltd, its subsidiaries or their employees, unless expressly so stated. It is the responsibility of the recipient to ensure that this email is virus free, therefore neither Peridale Ltd, its subsidiaries nor their employees accept any responsibility. From: Anand Murali [mailto:[email protected]] Sent: 14 April 2015 10:43 To: [email protected] Subject: Re: Hadoop imports Fail Many thanks. Ii fixed the problem using $javac -classpath $(hadoop classpath) -d <source files> Thanks Anand Murali 11/7, 'Anand Vihar', Kandasamy St, Mylapore Chennai - 600 004, India Ph: (044)- 28474593/ 43526162 (voicemail) On Tuesday, April 14, 2015 2:56 PM, Mich Talebzadeh <[email protected]> wrote: You need to create an environment file like environment.ksh or use ./kshrc in your home directory to build env variables for hadoop etc something like below export HADOOP_HOME=~/hadoop/hadoop-2.6.0 PATH="$HADOOP_HOME/bin:$HADOOP_HOME/sbin:/usr/java/latest/bin":$PATH export PATH=~/pig-0.14.0/bin:$PATH #HADOOP VARIABLES START export JAVA_HOME=/usr/java/latest export HADOOP_INSTALL=/home/hduser/hadoop/hadoop-2.6.0 export PATH=$PATH:$HADOOP_INSTALL/bin export PATH=$PATH:$HADOOP_INSTALL/sbin export HADOOP_MAPRED_HOME=$HADOOP_INSTALL export HADOOP_COMMON_HOME=$HADOOP_INSTALL export HADOOP_HDFS_HOME=$HADOOP_INSTALL export YARN_HOME=$HADOOP_INSTALL export HADOOP_COMMON_LIB_NATIVE_DIR=$HADOOP_INSTALL/lib/native export HADOOP_OPTS="-Djava.library.path=$HADOOP_INSTALL/lib" export HADOOP_CLIENT_OPTS="-Xmx2g" #HADOOP VARIABLES END CLASSPATH=.:$HADOOP_HOME/share/hadoop/common/hadoop-common-2.6.0-tests.jar:$HADOOP_HOME/share/hadoop/common/hadoop-common-2.6.0.jar:hadoop-nfs-2.6.0.jar:$HIVE_HOME/conf export CLASSPATH HTH Mich Talebzadeh http://talebzadehmich.wordpress.com Author of the books "A Practitioner’s Guide to Upgrading to Sybase ASE 15", ISBN 978-0-9563693-0-7. co-author "Sybase Transact SQL Guidelines Best Practices", ISBN 978-0-9759693-0-4 Publications due shortly: Creating in-memory Data Grid for Trading Systems with Oracle TimesTen and Coherence Cache Oracle and Sybase, Concepts and Contrasts, ISBN: 978-0-9563693-1-4, volume one out shortly NOTE: The information in this email is proprietary and confidential. This message is for the designated recipient only, if you are not the intended recipient, you should destroy it immediately. Any information in this message shall not be understood as given or endorsed by Peridale Ltd, its subsidiaries or their employees, unless expressly so stated. It is the responsibility of the recipient to ensure that this email is virus free, therefore neither Peridale Ltd, its subsidiaries nor their employees accept any responsibility. -----Original Message----- From: Andre Kelpe [mailto:[email protected]] Sent: 14 April 2015 09:52 To: [email protected] Subject: Re: Hadoop imports Fail Please just use a build tool like maven or gradle for your build. There is no way to manage your classpath like this and stay sane. Nobody does this and you shouldn't either. - André On Tue, Apr 14, 2015 at 7:34 AM, Anand Murali < <mailto:[email protected]> [email protected]> wrote: > Dear Naik: > > I have already set path both for Hadoop and Java in .hadoop and run it > prior to compilation > > Export JAVA_HOME=/home/anand_vihar/jdk1.7.0_75 > Export HADOOP_INSTALL=/home/anand_vihar/hadoop-2.6.0 > PATH=:$PATH:$HADOOP_INSTALL/bin:$HADOOP_INSTALL/sbin:$HADOOP_INSTALL/s > hare:$JAVA_HOME > > > So, is there not a way that the compiler goes thru all folders/jar and > pick up the right class and copile with just > > $javac *.java. > > > If not is there a way to do so, else every time compilation needs to > be done then a complete path list has to be typed and who knows which > class is located in which jar which is needed for compilation, which > when not found gives a compile error which becomes difficult to debug. > > Thanks > > Regards > > Anand Murali > 11/7, 'Anand Vihar', Kandasamy St, Mylapore Chennai - 600 004, India > Ph: (044)- 28474593/ 43526162 (voicemail) > > > > On Monday, April 13, 2015 9:58 PM, Ravindra Kumar Naik > < <mailto:[email protected]> [email protected]> wrote: > > > You need to set classpath to hadoop jar > > java -classpath <path/to/hadoop-2.6-core.jar>" MaxTemperatureMapper.java > > > > On Mon, Apr 13, 2015 at 11:33 AM, Anand Murali < > <mailto:[email protected]> [email protected]> > wrote: > > Dear Mr. Ted: > > Please find details > > Last login: Sun Apr 12 16:33:18 2015 from localhost > anand_vihar@Latitude-E5540:~$ cd hadoop-2.6.0 > <mailto:anand_vihar@Latitude-E5540:~/hadoop-2.6.0$> > anand_vihar@Latitude-E5540:~/hadoop-2.6.0$ . .hadoop > <mailto:anand_vihar@Latitude-E5540:~/hadoop-2.6.0$> > anand_vihar@Latitude-E5540:~/hadoop-2.6.0$ cd etc/hadoop > <mailto:anand_vihar@Latitude-E5540:~/hadoop-2.6.0/etc/hadoop$> > anand_vihar@Latitude-E5540:~/hadoop-2.6.0/etc/hadoop$ sh hadoop-env.sh > <mailto:anand_vihar@Latitude-E5540:~/hadoop-2.6.0/etc/hadoop$> > anand_vihar@Latitude-E5540:~/hadoop-2.6.0/etc/hadoop$ java -version > java version "1.7.0_75" > Java(TM) SE Runtime Environment (build 1.7.0_75-b13) > Java HotSpot(TM) 64-Bit Server VM (build 24.75-b04, mixed mode) > <mailto:anand_vihar@Latitude-E5540:~/hadoop-2.6.0/etc/hadoop$> > anand_vihar@Latitude-E5540:~/hadoop-2.6.0/etc/hadoop$ hadoop version > Hadoop 2.6.0 > Subversion <https://git-wip-us.apache.org/repos/asf/hadoop.git> > https://git-wip-us.apache.org/repos/asf/hadoop.git -r > e3496499ecb8d220fba99dc5ed4c99c8f9e33bb1 > Compiled by jenkins on 2014-11-13T21:10Z > Compiled with protoc 2.5.0 > From source with checksum 18e43357c8f927c0695f1e9522859d6a > This command was run using > /home/anand_vihar/hadoop-2.6.0/share/hadoop/common/hadoop-common-2.6.0.jar > <mailto:anand_vihar@Latitude-E5540:~/hadoop-2.6.0/etc/hadoop$> > anand_vihar@Latitude-E5540:~/hadoop-2.6.0/etc/hadoop$ cd .. > <mailto:anand_vihar@Latitude-E5540:~/hadoop-2.6.0/etc$> > anand_vihar@Latitude-E5540:~/hadoop-2.6.0/etc$ cd .. > <mailto:anand_vihar@Latitude-E5540:~/hadoop-2.6.0$> > anand_vihar@Latitude-E5540:~/hadoop-2.6.0$ start-dfs.sh --config > /home/anand_vihar/hadoop-2.6.0/conf > > Error Messages > > > $javac MaxTemperatureMapper.java > > symbol: class Mapper > MaxTemperatureMapper.java:8: error: cannot find symbol > public class MaxTemperatureMapper extends Mapper<LongWritable, Text, Text, > IntWritable> > ^ > symbol: class LongWritable > MaxTemperatureMapper.java:8: error: cannot find symbol > public class MaxTemperatureMapper extends Mapper<LongWritable, Text, Text, > IntWritable> > ^ > symbol: class Text > MaxTemperatureMapper.java:8: error: cannot find symbol > public class MaxTemperatureMapper extends Mapper<LongWritable, Text, Text, > IntWritable> > ^ > symbol: class Text > MaxTemperatureMapper.java:8: error: cannot find symbol > public class MaxTemperatureMapper extends Mapper<LongWritable, Text, Text, > IntWritable> > ^ > symbol: class IntWritable > MaxTemperatureMapper.java:15: error: cannot find symbol > public void map(LongWritable key, Text value, Context context) > ^ > symbol: class LongWritable > location: class MaxTemperatureMapper > MaxTemperatureMapper.java:15: error: cannot find symbol > public void map(LongWritable key, Text value, Context context) > ^ > symbol: class Text > location: class MaxTemperatureMapper > MaxTemperatureMapper.java:15: error: cannot find symbol > public void map(LongWritable key, Text value, Context context) > ^ > symbol: class Context > location: class MaxTemperatureMapper > MaxTemperatureMapper.java:25: error: cannot find symbol > airtemperature = Integer.parseInt(line.substring(87,92)); > ^ > symbol: variable airtemperature > location: class MaxTemperatureMapper > MaxTemperatureMapper.java:28: error: cannot find symbol > if (airTemparature != MISSING && quality.matches("[01459]")) > ^ > symbol: variable airTemparature > location: class MaxTemperatureMapper > MaxTemperatureMapper.java:30: error: cannot find symbol > context.write(new Text(year), new IntWritable(airTemperature)); > ^ > symbol: class Text > location: class MaxTemperatureMapper > MaxTemperatureMapper.java:30: error: cannot find symbol > context.write(new Text(year), new IntWritable(airTemperature)); > ^ > symbol: class IntWritable > location: class MaxTemperatureMapper > MaxTemperatureMapper.java:14: error: method does not override or implement a > method from a supertype > @Override > ^ > 17 errors > > Hope someone can advise. Look forward to hearing. > > Thanks > > Regards > > Anand Murali > 11/7, 'Anand Vihar', Kandasamy St, Mylapore > Chennai - 600 004, India > Ph: (044)- 28474593/ 43526162 (voicemail) > > > > On Sunday, April 12, 2015 5:59 PM, Ted Yu < <mailto:[email protected]> > [email protected]> wrote: > > > Can you tell us how you setup your project? > > Do you use maven to build it ? > > Please pastebin snippet of your code and the error you got. > > Cheers > > > > On Apr 12, 2015, at 4:16 AM, Anand Murali < <mailto:[email protected]> > [email protected]> wrote: > > Dear All: > > I am new to hadoop2.6.0. I managed to set up and install Hadoop and Java > 1.7. I wrote my first hadoop code with import statements of Hadoop class > files. However when I try and compile the code, I get errors, which are > reflective of the class files, which I suppose is not imported. I have run > hadoop-env.sh successfully before dameon startup. Can somebody advise. > > Thanks > > Anand Murali > 11/7, 'Anand Vihar', Kandasamy St, Mylapore > Chennai - 600 004, India > Ph: (044)- 28474593/ 43526162 (voicemail) > > > > > > -- André Kelpe <mailto:[email protected]> [email protected] <http://concurrentinc.com/> http://concurrentinc.com
