question Re: How to balance between mounpoints on a datanode server? in Archives of Support Questions (Read Only)

How to balance between mounpoints on a datanode server?

GLife — Tue, 11 Oct 2016 11:42:48 GMT

Hi everyone,

I have a system HDP with 5 datanode, each datanode have 3 mountpoint (/data01, /data02, /data03). Currently, 3 mointpoint in each datanode is full, so i add 2 mountpoint (/data04, /data05) to each server. But ambari still alert about Yarn, Nodemanager have 4 Unhealthy and 3 old mountpoint still full. I balanced hdfs but size of it decrease very small.

So, How to balace between mountpoints on a datanode server?

Thanks,

Re: How to balance between mounpoints on a datanode server?

sshimpi — Tue, 11 Oct 2016 17:46:02 GMT

@Mr GL

It seems you are hitting issue - https://issues.apache.org/jira/browse/HDFS-1312

You can have it manually balanced as per - https://wiki.apache.org/hadoop/FAQ#On_an_individual_data_node.2C_how_do_you_balance_the_blocks_on_the_disk.3F

Re: How to balance between mounpoints on a datanode server?

GLife — Wed, 12 Oct 2016 11:46:07 GMT

Thanks @Sagar Shimp,

I've followed the instructions of you (

https://wiki.apache.org/hadoop/FAQ#On_an_individual_data_node.2C_how_do_you_balance_the_blocks_on_the_disk.3F) and it worked.

Thanks again.