Using hedged reads in HBase

Question

Hi. I am using HBase and I want to enable Hedged reads for data. How to enable it?

Answer 1

To enable hedged reads, open the hbase-site.xml file and add the following properties:

<property>
  <name>dfs.client.hedged.read.threadpool.size</name>
  <value>20</value>  <!-- 20 threads -->
</property>
<property>
  <name>dfs.client.hedged.read.threshold.millis</name>
  <value>10</value>  <!-- 10 milliseconds -->
</property>

You can change the values of the property according to your requirement.