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From "B. Todd Burruss (Created) (JIRA)" <>
Subject [jira] [Created] (CASSANDRA-3935) Hints not delivered possibly because of pagination issue
Date Tue, 21 Feb 2012 05:01:34 GMT
Hints not delivered possibly because of pagination issue

                 Key: CASSANDRA-3935
             Project: Cassandra
          Issue Type: Bug
    Affects Versions: 1.1.0
            Reporter: B. Todd Burruss

I'm testing hinted handoff in 1.1 beta1 and cannot seem to get a hint delivered.  3 node cluster,
RF = 3, writing with CL = ONE.  killed a host then did the write using the CLI on another
node.  I can see hint waiting using CLI and I see the log messages at the end of this email.
 this suggests the hints exist bu are not being delivered (and I'll see the log messages over
and over.)

I did see tracing with debugger and see that in HintedHandoffManager.deliverHintsToEndpointInternal,
this line will remove the hint because of the Integer.MAX_VALUE

            ColumnFamily hintsPage = ColumnFamilyStore.removeDeleted(hintStore.getColumnFamily(filter),

I'm not sure I quite understand while MAX is used when the same "remove" is done in getColumnFamily(filter).
 regardless if it is useful or not, it prevents the hints from delivery.

any thoughts?

[default@unknown] use system;
Authenticated to keyspace: system
[default@system] list hintscolumnfamily;
Using default limit of 100
RowKey: 00
=> (super_column=493ecfa05c1411e100000da23097c7ff,
     (column=6b6579, value=6b35, timestamp=1329777799580, ttl=86400)
     (column=6d75746174696f6e, value=000662746f64646200026b3500000001000003e801000003e87fffffff80000000000000000000000100026335000004b96d055fd1300000000c68696e746564207772697465,
timestamp=1329777799579, ttl=86400)
     (column=7461626c65, value=62746f646462, timestamp=1329777799580, ttl=86400)
     (column=76657273696f6e, value=00000004, timestamp=1329777799580, ttl=86400))

1 Row Returned.
Elapsed time: 58 msec(s).

INFO [HintedHandoff:1] 2012-02-20 14:44:53,811 (line 296) Started
hinted handoff for token: 0 with IP: /
INFO [HintedHandoff:1] 2012-02-20 14:44:53,815 (line 373) Finished
hinted handoff of 0 rows to endpoint /

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