1. hadoop mapper static initialisation stackoverflow.comI have a code fragment in which I am using a static code block to initialize a variable. |
2. Hadoop- Basic question regarding input to the mapper function stackoverflow.comWe can provide input files to the mapper as FileInputFormat.setInputPaths(conf, inputPath); Is it possible to pass a reference to memory say a DOM tree constructed using a DOM parser after parsing an ... |
3. Pass file location as value to hadoop mapper? stackoverflow.comIs it possible to pass the locations of a files in HDFS as the value to my mapper so that i can run an executable on them to process them? |
4. Using a .exe as part of mapper (Hadoop) stackoverflow.comI am writing a mapreduce job to process binary log files. An executable is needed to process the file before the relevent information can be obtained.Is the java process builder the ... |
5. Get the input path in a Hadoop Mapper Class stackoverflow.comI have implemented a simple MapReduce project in Hadoop for processing logs. The input path is the directory where the logs are. It works fine but I would like to ... |
6. printing to screen variables inside mapper stackoverflow.comI want to check the contents of an element that is in my map functions, is there a way to print the contents of the variables to the screen. It is very slow ... |
7. The type Mapper is not generic, hadoop eclipse pluggin stackoverflow.comI am using eclipse to write mapreduce program. I imported hadoop library (hadoop-0.13.0-core.jar) I imported Mapper class import org.apache.hadoop.mapred.Mapper; there is no error in this but when I wrote this program source of this ... |
8. Why not mapper/reducer for hadoop TeraSort stackoverflow.comI am planning to insert some code into the mapper of the TeraSort class in Hadoop 0.20.2. However, after reviewing the source code, I cannot locate the segment that mapper is ... |
9. Writing only the Value on Mapper Job stackoverflow.comI am currently working on a MapReduce Job which I am only using the mapper without the reducer. I do not need to write the key out because I only need ... |
10. Sending a variable to the Mapper Class stackoverflow.comI am trying to get an input from the user and pass it to my mapper class that I have created but whenever the value always initialises to zero instead of ... |
11. How to design my mapper? stackoverflow.comI have to write a mapreduce job but I dont know how to go about it, I have jar MARD.jar through which I can instantiate MARD objects. Using which I call the ... |
12. How to make your mapper write on local file system in hadoop stackoverflow.comI wish to write a file and create a directory in my local file system through m MapReduce code. Also if I create a directory in the working directory during the ... |
13. How does hive/hadoop assures that each mapper works on data that is local for it? stackoverflow.com2 basic questions that trouble me:
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14. Hadoop gzip input file using only one mapper stackoverflow.comPossible Duplicate:I found that when using input file that ... |
15. Hadoop java mapper -copyFromLocal heap size error stackoverflow.comAs part of my Java mapper I have a command executes some code on the local node and copies a local output file to the hadoop fs. Unfortunately I'm getting ... |
16. MapReduceBase and Mapper deprecated stackoverflow.comMapReduceBase, Mapper and JobConf are deprecated in Hadoop 0.20.203.
What should we use now?
Edit 1 - for the Mapper and the MapReduceBase, I found that ... |
17. How to pass object to Mapper and reducers stackoverflow.comI have an application run on hadoop. How can I pass the objects to the mappers and reducers so as to process the data. For example, I declare a FieldFilter object ... |