Its not clear to me as how one should configure Hadoop MapReduce log4j at a job level. Can someone help me answer these questions. 1) How to add support log4j logging from a client machine. i.e I ...

I have run below Test-1 and Test-2 for longer run for performance test with redis configuration values specified, still we see the highlighted error-1 & 2 message and cluster is failing for som...

I am trying to implement reduce side join , and using mapfile reader to look up distributed cache but it is not looking up the values when checked in stderr it showed the following error, lookupfil...

I am looking for a functionality similar to the distributed cache of Hadoop in Spark. I need a relatively small data file (with some index values) to be present in all nodes in order to make some c...

Whats the difference between <hz:map> tag created in the applicationContext vs the one that is defined in the <hz:config> segment? How are they related? I am aware that <hz:map&gt...

As getLocalCacheFiles() is deprecated, I'm trying to find an alternative. getCacheFiles() seems to be one, but I doubt whether they are the same. When you call addCacheFile(), the file in HDFS wo...

What does the distribute cache actually mean? Having a file in distributed cache means that is it available in every datanode and hence there will be no internode communication for that data, or do...

I have recently started taking a look into Infinispan as our caching layer. After reading through the operation modes in Infinispan as mentioned below. Embedded mode: This is when you start Infin...

I am adding a file to distributed cache using the following code: Configuration conf2 = new Configuration(); job = new Job(conf2); job.setJobName("Join with Cache"); DistributedCache.addCacheFil...