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Subject: svn commit: r1534471 - /kafka/site/08/ops.html
Date: Tue, 22 Oct 2013 03:29:50 -0000
To: commits@kafka.apache.org
From: junrao@apache.org
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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>