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Posted to user@hadoop.apache.org by John Lilley <jo...@redpoint.net> on 2013/10/04 15:22:53 UTC
getFileBlockLocations
When I call getFileBlockLocations() on a DFS, will it return the blocks for currently-inactive nodes?
If so, how can I filter out the unavailable blocks?
Or more generally, how do I get the list of node status? Is that ApplicationClientProtocol.getClusterNodes()?
Thanks,
John
Re: getFileBlockLocations
Posted by Nicolas Liochon <nk...@gmail.com>.
If the node is dead, then its blocks are not included. If the node is
stale, its blocks are returned at the end of the array. That is, for a file
with 1 block replicated 3 times on D1, D2, D3 with D1 stale and D2 dead,
the list will be D3; D1.
On Fri, Oct 4, 2013 at 3:22 PM, John Lilley <jo...@redpoint.net>wrote:
> When I call getFileBlockLocations() on a DFS, will it return the blocks
> for currently-inactive nodes? ****
>
> If so, how can I filter out the unavailable blocks?****
>
> Or more generally, how do I get the list of node status? Is that
> ApplicationClientProtocol.getClusterNodes()?****
>
> Thanks,****
>
> John****
>
> ** **
>
> ** **
>
Re: getFileBlockLocations
Posted by Nicolas Liochon <nk...@gmail.com>.
If the node is dead, then its blocks are not included. If the node is
stale, its blocks are returned at the end of the array. That is, for a file
with 1 block replicated 3 times on D1, D2, D3 with D1 stale and D2 dead,
the list will be D3; D1.
On Fri, Oct 4, 2013 at 3:22 PM, John Lilley <jo...@redpoint.net>wrote:
> When I call getFileBlockLocations() on a DFS, will it return the blocks
> for currently-inactive nodes? ****
>
> If so, how can I filter out the unavailable blocks?****
>
> Or more generally, how do I get the list of node status? Is that
> ApplicationClientProtocol.getClusterNodes()?****
>
> Thanks,****
>
> John****
>
> ** **
>
> ** **
>
Re: getFileBlockLocations
Posted by Nicolas Liochon <nk...@gmail.com>.
If the node is dead, then its blocks are not included. If the node is
stale, its blocks are returned at the end of the array. That is, for a file
with 1 block replicated 3 times on D1, D2, D3 with D1 stale and D2 dead,
the list will be D3; D1.
On Fri, Oct 4, 2013 at 3:22 PM, John Lilley <jo...@redpoint.net>wrote:
> When I call getFileBlockLocations() on a DFS, will it return the blocks
> for currently-inactive nodes? ****
>
> If so, how can I filter out the unavailable blocks?****
>
> Or more generally, how do I get the list of node status? Is that
> ApplicationClientProtocol.getClusterNodes()?****
>
> Thanks,****
>
> John****
>
> ** **
>
> ** **
>
Re: getFileBlockLocations
Posted by Nicolas Liochon <nk...@gmail.com>.
If the node is dead, then its blocks are not included. If the node is
stale, its blocks are returned at the end of the array. That is, for a file
with 1 block replicated 3 times on D1, D2, D3 with D1 stale and D2 dead,
the list will be D3; D1.
On Fri, Oct 4, 2013 at 3:22 PM, John Lilley <jo...@redpoint.net>wrote:
> When I call getFileBlockLocations() on a DFS, will it return the blocks
> for currently-inactive nodes? ****
>
> If so, how can I filter out the unavailable blocks?****
>
> Or more generally, how do I get the list of node status? Is that
> ApplicationClientProtocol.getClusterNodes()?****
>
> Thanks,****
>
> John****
>
> ** **
>
> ** **
>