Author: junrao
Date: Tue Oct 22 03:29:50 2013
New Revision: 1534471
URL: http://svn.apache.org/r1534471
Log:
change explanation of ISR shrink/expansion jmx
Modified:
kafka/site/08/ops.html
Modified: kafka/site/08/ops.html
URL: http://svn.apache.org/viewvc/kafka/site/08/ops.html?rev=1534471&r1=1534470&r2=1534471&view=diff
==============================================================================
--- kafka/site/08/ops.html (original)
+++ kafka/site/08/ops.html Tue Oct 22 03:29:50 2013
@@ -234,14 +234,17 @@ We pay particular we do graphing and ale
<td>mostly even across brokers</td>
</tr>
<tr>
- <td>ISR expansion rate</td>
+ <td>ISR shrink rate</td>
<td>"kafka.server":name="ISRShrinksPerSec",type="ReplicaManager"</td>
- <td>non-zero only during broker startup</td>
+ <td>If a broker goes down, ISR for some of the partitions will
+ shrink. When that broker is up again, ISR will be expanded
+ once the replicas are fully caught up. Other than that, the
+ expected value for both ISR shrink rate and expansion rate is 0. </td>
</tr>
<tr>
- <td>ISR shrink rate</td>
+ <td>ISR expansion rate</td>
<td>"kafka.server":name="ISRShrinksPerSec",type="ReplicaManager"</td>
- <td>0</td>
+ <td>See above</td>
</tr>
<tr>
<td>Max lag in messages btw follower and leader replicas</td>
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