Hello Hadoopers,
I'm getting this exception in Hadoop while trying to read file that was
added to distributed cache, and the strange thing is that the file
exists on the given location
java.io.FileNotFoundException: File does not exist:
Driver
Configuration conf = new Configuration();
FileSystem fs = FileSystem.get(conf);
Path cachefile = new Path(path/to/file);
FileStatus[] list = fs.globStatus(cachefile);
for (FileStatus status : list) {
DistributedCache.addCacheFile(status.getPath().toUri(), conf);
}
In setup
public void
Thanks a lot, it works!
Do you have any ideas what was the problem? Should this work in fully
distributed mode, or I need to make some modifications? When to use
DistributedCache.addCacheFile and when
DIstributedCache.addLocalCacheFile?
Thanks again!
On Mon 22 Dec 2014 11:03:36 AM CET,
You should not use DistrubutedCache. It is deprecated.
See this:
http://stackoverflow.com/questions/21239722/hadoop-distributedcache-is-deprecated-what-is-the-preferred-api
Regards,
Shahab
On Mon, Dec 22, 2014 at 6:22 AM, Marko Dinic marko.di...@nissatech.com
wrote:
Thanks a lot, it works!
Todd:
1. Map Task spits out key,value pairs in sorted order.
2. Shuffle is actually copy phase in Reduce Task.
3. Then Reduce task performs merge operation on the Map output intermediate
key/value pairs.
4. Reduce Task builds the iterable list of values for each key.
I was trying to understand
Hi,
how can I sign up to mailing list ?
Tahnk in advance
michele
rossini
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Mark Charts
On
Hi Experts,
In Hadoop 2.x code, there are lots of deprecated properties and many of
them have new version in 2.x code.
For example,
org.apache.hadoop.mapred.JobConf#MAPRED_JOB_MAP_MEMORY_MB_PROPERTY is
deprecated, and its new version is MAPREDUCE_JOB_MAP_MEMORY_MB_PROPERTY.
Does MRv2 support
