Regarding " node tool move "

[Rock Zhang <ro...@alohar.com>]

Hi All,

I want to manually move some token from one hostA to host B, i do not fully
understand this command,


* move <new token>       - Move node on the token ring to a new token*

Say host A has token: (i got it with nodetool info -T)
Token                  : -9096422322933500933
Token                  : -8988583730922232407
Token                  : -8881261198286236893
Token                  : -8811920524626612334

on host A, if i run command  "nodetool move  -9096422322933500933" ,  what
gonna happen ?
Move data associated with token "-9096422322933500933" from where to where ?

If i want to move data on token "-8811920524626612334" to hostB, what
should I do ?


Thanks
Rock

Re: Regarding " node tool move "

[Robert Coli <rc...@eventbrite.com>]

On Thu, Sep 24, 2015 at 1:29 AM, Rock Zhang <ro...@alohar.com> wrote:

> on host A, if i run command  "nodetool move  -9096422322933500933" ,  what
> gonna happen ?
> Move data associated with token "-9096422322933500933" from where to where
> ?
>

When you change the token of a node, you change the "range" it is a primary
replica for.

Replicas for the range being "lost" on that node and adjacent nodes stream
their data to nodes "gaining" that data/range.

Be sure to run nodetool cleanup after any move operation.

=Rob