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https://issues.apache.org/jira/browse/KNOX-1221?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16408005#comment-16408005
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Sandeep More edited comment on KNOX-1221 at 3/21/18 2:35 PM:
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Hello [~maythes] this is a curious case.
Let me know if I understand the problem correctly, when there is only one
request to WebHDFS via Knox (just one thread) the speed is limited to
~100mbit/s but when there are multiple concurrent requests the speed for the
other requests (not the first thread) is significantly greater.
What kind of a speed difference do you see ?
was (Author: smore):
Hello [~maythes] this is a curious case.
Let me know if I understand the problem correctly, when there is only one
request to WebHDFS via Knox (just one thread) the speed is limited to
~100mbit/s but there are multiple concurrent requests the speed for the other
requests (not the first thread) is significantly greater.
What kind of a speed difference do you see ?
> Knox limits speed to 100mbit/s
> ------------------------------
>
> Key: KNOX-1221
> URL: https://issues.apache.org/jira/browse/KNOX-1221
> Project: Apache Knox
> Issue Type: Bug
> Components: Server
> Affects Versions: 0.9.0, 1.0.0
> Environment: Knox 1.0.0
> RHEL 6.9
> JDK 1.8.0_60
> Launch string:
> /usr/bin/java -Djava.library.path=/opt/knox-1.0.0/ext/native -Xms2g -Xmx8g
> -Dcom.sun.management.jmxremote
> -Dcom.sun.management.jmxremote.authenticate=false
> -Dcom.sun.management.jmxremote.ssl=false
> -Dcom.sun.management.jmxremote.port=9000 -jar /opt/knox-1.0.0/bin/gateway.jar
> Reporter: Georgy
> Priority: Major
> Attachments: gateway-site.xml, rtk.xml
>
>
> If I use direct connection to WebHDFS from one node I have speed nearly
> several gigabites/sec when download or upload large files. But if I use knox
> I have ulpload/download speed only 100mbit/sec from the same node. Found that
> knox limits speed for one https session. As a workaround I upload large files
> through knox in parallel but it is not a good way.
> Couldn't find any configuration params that can control such behaviour. Is it
> a code limitation?
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