Do you have a large region that the fifth map task might be working on ? Cheers
On Wed, Jun 18, 2014 at 2:05 AM, ch huang <justlo...@gmail.com> wrote: > hi,mailist: > i use hbase export tool export hbase data to HDFS,but it very > slow,the first 4map finished in 1min ,but the fifth map task run 35min > before it finished ,why? >