Categories
DevOps

How to distribute data evenly across all disks on a Hadoop datanode

Distribute data evenly across all disks on a Hadoop datanode.

Categories
DevOps

How to update reconfigurable properties on Hadoop node

Update reconfigurable properties on Hadoop node without restart.

Categories
DevOps

How to put Hadoop datanodes in maintenance state

Use JSON-based configuration format for Hadoop datanodes to create a whitelist and control put these in normal, decommissioned or maintenance state.

Categories
DevOps

How to rebalance data across HDFS cluster

Rebalance data across HDFS cluster.

Categories
SysOps

How to log HDFS operations

Perform HDFS audit logging.

Categories
SysOps

How to create Yarn nodes whitelist

Create Yarn nodes whitelist.

Categories
SysOps

How to save namespace and perform checkpoint

Save namespace on namenode and perform checkpoint on secondary namenode.

Categories
SysOps

How to inspect Hadoop configuration using command-line

Inspect Hadoop configuration using command-line.