I just noticed the job status for MR jobs tends to show 0's in the Map and Reduce columns but actually shows the totals correctly.
I am not sure exactly when this started happening, but this cluster was upgraded from Hadoop 1.0.4 to 1.1.2 and now to 1.2.1. It definitely worked fine on 1.0.4, but I don't recall testing on 1.1.2. Anyone else running into this issue? Map-Reduce Framework Reduce input groups 0 0 0 Map output materialized bytes 0 0 5,910 Combine output records 0 0 250 Map input records 0 0 48,556 Reduce shuffle bytes 0 0 4,960 Physical memory (bytes) snapshot 0 0 56,364,822,528 Note that not *all* counters are doing this! Some still show properly: FileSystemCounters HDFS_BYTES_READ 844,499,067,747 0 844,499,067,747 FILE_BYTES_WRITTEN 4,879,509 60,403 4,939,912
