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https://issues.apache.org/jira/browse/CASSANDRA-2388?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13053233#comment-13053233
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Mck SembWever edited comment on CASSANDRA-2388 at 6/22/11 1:05 PM:
-------------------------------------------------------------------
Problem with the suggested approach is that sortByProximity(..) *only* works
when address is the local address. See assert statement
DynamicEndpointSnitch:134
I could hack this and rewrite the line to
{noformat}IEndpointSnitch snitch = DatabaseDescriptor.getEndpointSnitch();
snitch = snitch instanceof DynamicEndpointSnitch ?
((DynamicEndpointSnitch)snitch).subsnitch : snitch;
snitch.sortByProximity(address, addresses);{noformat}
But this of course means that we always bypass DynamicEndpointSnitch's "scores".
was (Author: michaelsembwever):
Problem with the suggested approach is that sortByProximity(..) *only*
works when address is the local address. See assert statement
DynamicEndpointSnitch:134
I could hack this are write the line instead
{noformat}
IEndpointSnitch snitch = DatabaseDescriptor.getEndpointSnitch();
snitch = snitch instanceof DynamicEndpointSnitch ?
((DynamicEndpointSnitch)snitch).subsnitch : snitch;
snitch.sortByProximity(address, addresses);{noformat}
But this of course means that we always bypass DynamicEndpointSnitch's "scores".
> ColumnFamilyRecordReader fails for a given split because a host is down, even
> if records could reasonably be read from other replica.
> -------------------------------------------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-2388
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2388
> Project: Cassandra
> Issue Type: Bug
> Components: Hadoop
> Reporter: Eldon Stegall
> Assignee: Mck SembWever
> Labels: hadoop, inputformat
> Fix For: 0.8.2
>
> Attachments: 0002_On_TException_try_next_split.patch,
> CASSANDRA-2388.patch, CASSANDRA-2388.patch
>
>
> ColumnFamilyRecordReader only tries the first location for a given split. We
> should try multiple locations for a given split.
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