Hi Experts, At times, we have seen tasks taking a lot long time map tasks and looking at the task logs, its spending a lot of time in "o.a.h.m.MapTask: data buffer = xxx / yyy".
After sometime it prints the next line " MapTask: record buffer = xxx / yyy". I initially thought it was allocating data buffer in JVM and causing memory pressure. But it doesn't seem to be the case and no swapping is happening in the system as well. Has anyone else faced similar issue with MR-1.0? Any pointers would be appreciated. -- ~Rajesh.B
