Hi all, To my understand, Hedged-Read is a technique for copying IO to a replica when pread () is delayed to mitigate IO latency such as speculative execution in MapReduce.
- Does Hedged-read really happen where it uses hbase databases? - Does hedged-read often occur because of a bottleneck in HDFS or a bottleneck in the storage itself? - What is the best number to set the timeout and thread for Hedged-Read? Thank you ᐧ
