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https://issues.apache.org/jira/browse/HBASE-17408?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15801798#comment-15801798
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Ted Yu commented on HBASE-17408:
--------------------------------

Thanks for taking this JIRA.
{code}
+    if (this.maxRowsPerRequest <= 0) {
+      throw new IllegalArgumentException("maxRowsPerRequest="
{code}
Please move the above check immediately below where this.maxRowsPerRequest is 
assigned.
{code}
+    public void notifyFinal(ReturnCode code, HRegionLocation loc, long 
rowSize) {
+      if (code == ReturnCode.INCLUDE) {
+        long currentRows = serverRows.containsKey(loc.getServerName())
+                ? serverRows.get(loc.getServerName()) : 0L;
+        serverRows.put(loc.getServerName(), currentRows + 1);
{code}
Why is 1 used in the last line above ? rowSize has no effect ?


> Introduce per request limit by number of mutations
> --------------------------------------------------
>
>                 Key: HBASE-17408
>                 URL: https://issues.apache.org/jira/browse/HBASE-17408
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 2.0.0
>            Reporter: Ted Yu
>            Assignee: ChiaPing Tsai
>             Fix For: 2.0.0
>
>         Attachments: HBASE-17408.v0.patch, HBASE-17408.v1.patch
>
>
> HBASE-16224 introduced hbase.client.max.perrequest.heapsize to limit the 
> amount of data sent from client.
> We should consider adding per request limit through the number of mutations 
> in a batch.
> In recent troubleshooting sessions, customer had to do this in their 
> application code to avoid OOME on the server side.



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