[
https://issues.apache.org/jira/browse/HBASE-15437?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15567520#comment-15567520
]
Anoop Sam John commented on HBASE-15437:
----------------------------------------
It is metric on response data size not exactly like response RPC size right?
Seeing the use of too large, we add some logs. That means user is trying to
fetch too much of data in a single call. There is all chances of timeouts and
memory overuse. (We do have heartbeats, early part response based on size/time
BTW) So I feel we need continue with the old way of raw data size which we are
returning. At RPC side there might be encoding/compression based on the cluster
needs.
> Response size calculated in RPCServer for warning tooLarge responses does NOT
> count CellScanner payload
> -------------------------------------------------------------------------------------------------------
>
> Key: HBASE-15437
> URL: https://issues.apache.org/jira/browse/HBASE-15437
> Project: HBase
> Issue Type: Bug
> Components: IPC/RPC
> Reporter: deepankar
> Assignee: deepankar
> Attachments: HBASE-15437-v1.patch, HBASE-15437.patch
>
>
> After HBASE-13158 where we respond back to RPCs with cells in the payload ,
> the protobuf response will just have the count the cells to read from
> payload, but there are set of features where we log warn in RPCServer
> whenever the response is tooLarge, but this size now is not considering the
> sizes of the cells in the PayloadCellScanner. Code form RPCServer
> {code}
> long responseSize = result.getSerializedSize();
> // log any RPC responses that are slower than the configured warn
> // response time or larger than configured warning size
> boolean tooSlow = (processingTime > warnResponseTime &&
> warnResponseTime > -1);
> boolean tooLarge = (responseSize > warnResponseSize && warnResponseSize
> > -1);
> if (tooSlow || tooLarge) {
> // when tagging, we let TooLarge trump TooSmall to keep output simple
> // note that large responses will often also be slow.
> logResponse(new Object[]{param},
> md.getName(), md.getName() + "(" + param.getClass().getName() +
> ")",
> (tooLarge ? "TooLarge" : "TooSlow"),
> status.getClient(), startTime, processingTime, qTime,
> responseSize);
> }
> {code}
> Should this feature be not supported any more or should we add a method to
> CellScanner or a new interface which returns the serialized size (but this
> might not include the compression codecs which might be used during response
> ?) Any other Idea this could be fixed ?
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
