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Date: Fri, 24 Feb 2012 20:43:44 +0900
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Subject: Cassandra keeps on logging "Finished hinted handoff of 0 rows to
 endpoint"
From: Manoj Mainali <mainalimanoj@gmail.com>
To: user@cassandra.apache.org
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Hi,

I have been running Cassandra 1.0.7 and in the log file I see the log saying

" Finished hinted handoff of 0 rows to endpoint /{ipaddress}"

The above issue can be reproduced by the following steps,

1. Start a cluster with 2 node, suppose node1 and node2
2. Create a keyspace with rf=2, create column family
3. Stop node2
4. Insert some rows, suppose 100, to cluster with consistency level 1
5. Restart node2

When the node2 is restarted, node1 sends the hints to the node2 and from
the log I see that 100 rows are sent. But, after that in the interval of
approximately 10 mins, Cassandra logs "Finished hinted handoff of 0 rows to
the endpoint .."

When I do the "list hintscolumnfamily" from the cassandra-cli, it shows a
result of 1 row, but no columns data.

There seems to be a issue raised before,
https://issues.apache.org/jira/browse/CASSANDRA-3733, and it says it is
fixed in 1.0.7. However, I keep seeing the above log.

It seems that the Cassandra is trying to send hints message even when all
the hints are delivered and there are no more hints left. Is there a way to
solve the above issue?
Recently, another issue was also raised
https://issues.apache.org/jira/browse/CASSANDRA-3935 and they are similar,
but I am not sure if they are caused by the same reason.

Does anyone know how to solve the issue?

Thanks,
Manoj

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Hi,<div><br></div><div>I have been running Cassandra 1.0.7 and in the log f=
ile I see the log saying<div><br></div><div>&quot;<span style>=A0Finished=
=A0</span><span class=3D"il" style>hinted</span><span style>=A0handoff of 0=
 rows to endpoint /{ipaddress}&quot;</span></div>
<div><span style><br></span></div><div><font color=3D"#222222" face=3D"aria=
l, sans-serif">The above issue can be reproduced by the following steps,</f=
ont></div><div><font color=3D"#222222" face=3D"arial, sans-serif"><br></fon=
t></div>
<div><font color=3D"#222222" face=3D"arial, sans-serif">1. Start a cluster =
with 2 node, suppose node1 and node2</font></div><div><font color=3D"#22222=
2" face=3D"arial, sans-serif">2. Create a keyspace with rf=3D2, create colu=
mn family</font></div>
<div><font color=3D"#222222" face=3D"arial, sans-serif">3. Stop node2</font=
></div><div><font color=3D"#222222" face=3D"arial, sans-serif">4. Insert so=
me rows, suppose 100, to cluster with consistency level 1</font></div><div>=
<font color=3D"#222222" face=3D"arial, sans-serif">5. Restart node2</font><=
/div>
<div><font color=3D"#222222" face=3D"arial, sans-serif"><br></font></div><d=
iv><font color=3D"#222222" face=3D"arial, sans-serif">When the node2 is res=
tarted, node1 sends the hints to the node2 and from the log I see that 100 =
rows are sent. But, after that in the interval of approximately 10 mins, Ca=
ssandra logs &quot;Finished hinted handoff of 0 rows to the endpoint ..&quo=
t;</font></div>
<div><font color=3D"#222222" face=3D"arial, sans-serif"><br></font></div><d=
iv><font color=3D"#222222" face=3D"arial, sans-serif">When I do the &quot;l=
ist hintscolumnfamily&quot; from the cassandra-cli, it shows a result of 1 =
row, but no columns data.</font></div>
<div><font color=3D"#222222" face=3D"arial, sans-serif"><br></font></div><d=
iv><font color=3D"#222222" face=3D"arial, sans-serif">There seems to be a i=
ssue raised before,=A0</font><a href=3D"https://issues.apache.org/jira/brow=
se/CASSANDRA-3733">https://issues.apache.org/jira/browse/CASSANDRA-3733</a>=
, and it says it is fixed in 1.0.7. However, I keep seeing the above log.=
=A0</div>
<div><br></div><div>It seems that the Cassandra is trying to send hints mes=
sage even when all the hints are delivered and there are no more hints left=
. Is there a way to solve the above issue?=A0</div><div>Recently, another i=
ssue was also raised=A0<a href=3D"https://issues.apache.org/jira/browse/CAS=
SANDRA-3935">https://issues.apache.org/jira/browse/CASSANDRA-3935</a>=A0and=
 they are similar, but I am not sure if they are caused by the same reason.=
</div>
<div><br></div><div>Does anyone know how to solve the issue?</div><div><br>=
</div><div>Thanks,</div></div><div>Manoj</div>

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