When you run FSCK, what options did you run it with? If you're using 'hadoop fsck /' then you will typically see a lot of dots being output and amongst those dots you should see missing/corrupt or under-replicated notices. Here's an excerpt containing under replicated blocks, for an example:
.................................................................................................... ..................................................................................... /user/blank/.staging/job_201302211222_0011/libjars/common.jar: Under replicated blk_-856998378388135111_3050830. Target Replicas is 10 but found 9 replica(s). ............... .. /user/blank/.staging/job_201302211222_0733/job.jar: Under replicated blk_4441280820634984431_3150889. Target Replicas is 10 but found 9 replica(s). ....... /user/blank/.staging/job_201302211222_0741/job.jar: Under replicated blk_6336347773734645693_3150957. Target Replicas is 10 but found 9 replica(s). .......... /user/blank/.staging/job_201302211222_0755/job.jar: Under replicated blk_-1209937263563068132_3154083. Target Replicas is 10 but found 9 replica(s). . /user/blank/.staging/job_201302211222_0756/job.jar: Under replicated blk_-365467798112255961_3154084. Target Replicas is 10 but found 9 replica(s). ................................................................................ .................................................................................................... .................................................................................................... ........................................[...] The paths you see in the example are the HDFS locations within the cluster. That should be the information you're looking for. Does this help? -Shawn On Wednesday, February 27, 2013 4:17:18 AM UTC-6, Dhanasekaran Anbalagan wrote: > > Hi Guys, > > I am running three machine cluster, with replication factor 2, I got > problem in replica i changed to 2. > after I ran fsck i got Under-replicated blocks: 71 (0.0034828386 %) > > Total size: 105829415143 B > Total dirs: 9704 > Total files: 2038873 (Files currently being written: 2) > Total blocks (validated): 2038567 (avg. block size 51913 B) (Total open > file blocks (not validated): 2) > Minimally replicated blocks: 2038567 (100.0 %) > Over-replicated blocks: 0 (0.0 %) > Under-replicated blocks: 71 (0.0034828386 %) > Mis-replicated blocks: 0 (0.0 %) > Default replication factor: 2 > Average block replication: 1.9999995 > Corrupt blocks: 0 > Missing replicas: 71 (0.0017414198 %) > Number of data-nodes: 2 > Number of racks: 1 > FSCK ended at Wed Feb 27 05:12:31 EST 2013 in 32647 milliseconds > > > Please guide what the block location of the 71. in HDFS file system. > > -Dhanasekaran. > Did I learn something today? If not, I wasted it. >
