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From "Henry Robinson (Code Review)" <>
Subject [Impala-ASF-CR] IMPALA-4135: Thrift threaded server times-out connections during high load
Date Mon, 03 Oct 2016 20:41:59 GMT
Henry Robinson has posted comments on this change.

Change subject: IMPALA-4135: Thrift threaded server times-out connections during high load

Patch Set 5:


This looks good to me. 

One last thing: we should think about how we're going to monitor this. Could you add metrics
to this server to measure the queue size? You can add a "InitMetrics(MetricGroup*)" call to
TAcceptQueueServer, called from ThriftServer. The most important metric would be a queue length
one, incremented when the accept thread adds a connection to the queue, and decremented on
the other side.
Commit Message:

PS5, Line 18: This patch has been tested locally with the repro shown in IMPALA-4135, but
            : it still needs to be tested in a real cluster.
no longer true.

Add a comment about what testing you did.
File be/src/rpc/TAcceptQueueServer.h:

PS5, Line 20: // with the
            : // significant changes noted inline below.
strange line break in comment again

PS5, Line 45: thread pool
"separate thread, asynchronously. "

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Gerrit-MessageType: comment
Gerrit-Change-Id: Ie50e728974ef31a9d49132a0b3f7cde2a4f3356d
Gerrit-PatchSet: 5
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Thomas Tauber-Marshall <>
Gerrit-Reviewer: Henry Robinson <>
Gerrit-Reviewer: Juan Yu <>
Gerrit-Reviewer: Matthew Jacobs <>
Gerrit-Reviewer: Sailesh Mukil <>
Gerrit-Reviewer: Thomas Tauber-Marshall <>
Gerrit-HasComments: Yes

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