cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Todd Burruss <bburr...@expedia.com>
Subject Re: hinted handoff 16 s delay
Date Thu, 23 Feb 2012 23:43:12 GMT
if I remember correctly, cassandra has a random delay in it so hint
deliver is staggered and does not overwhelm the just restarted node.

On 2/23/12 1:46 PM, "Hontvári József Levente" <hontvari@flyordie.com>
wrote:

>I have played with a test cluster, stopping cassandra on one node and
>updating a row on another. I noticed a delay in delivering hinted
>handoffs for which I don't know the rationale. After the node which
>originally received the update noticed that the other server is up, it
>waited 16 s before it started pushing the hints.
>
>Here is the log:
>
>  INFO [GossipStage:1] 2012-02-23 20:05:32,516 StorageService.java (line
>988) Node /192.0.2.1 state jump to normal
>  INFO [HintedHandoff:1] 2012-02-23 20:05:49,766
>HintedHandOffManager.java (line 296) Started hinted handoff for token: 1
>with IP: /192.0.2.1
>  INFO [HintedHandoff:1] 2012-02-23 20:05:50,048 ColumnFamilyStore.java
>(line 704) Enqueuing flush of
>Memtable-HintsColumnFamily@1352140719(205/1639 serialized/live bytes, 2
>ops)
>  INFO [FlushWriter:31] 2012-02-23 20:05:50,049 Memtable.java (line 246)
>Writing Memtable-HintsColumnFamily@1352140719(205/1639 serialized/live
>bytes, 2 ops)
>  INFO [FlushWriter:31] 2012-02-23 20:05:50,192 Memtable.java (line 283)
>Completed flushing
>/media/data/cassandra/data/system/HintsColumnFamily-hc-10-Data.db (290
>bytes)
>  INFO [CompactionExecutor:70] 2012-02-23 20:05:50,193
>CompactionTask.java (line 113) Compacting
>[SSTableReader(path='/media/data/cassandra/data/system/HintsColumnFamily-h
>c-10-Data.db'), 
>SSTableReader(path='/media/data/cassandra/data/system/HintsColumnFamily-hc
>-9-Data.db')]
>  INFO [HintedHandoff:1] 2012-02-23 20:05:50,195
>HintedHandOffManager.java (line 373) Finished hinted handoff of 1 rows
>to endpoint /192.0.2.1
>


Mime
View raw message