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From "Anu Engineer (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-11492) Ozone: Add the ability to handle sendContainerReport Command
Date Tue, 21 Mar 2017 04:10:42 GMT

     [ https://issues.apache.org/jira/browse/HDFS-11492?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Anu Engineer updated HDFS-11492:
--------------------------------
    Attachment: HDFS-11492-HDFS-7240.003.patch

Thank you for your comments [~xyao]. The new patch addresses all comments except one.

bq. Line 622-632: NIT: a good candidate to use JDK8 stream/filter/map?
fixed.
bq. Line 276: NIT: typo in commandProcessThead
fixed.
bq. Line 280: should we limit the maximum restart attempts?
I am very reluctant to do this, because we have no safe way of only disabling this thread.
That is if statemachine is running, we must have command processor also running. The hope
is that if we get errors in some handler, that handler will handle it correctly and set the
shutdown flag for errors which are not recoverable. if the unhandledException handler is getting
run, that is probably a Bug. We can add a counter to  monitor this condition in  data nodes
via JMX later.

> Ozone: Add the ability to handle sendContainerReport Command
> ------------------------------------------------------------
>
>                 Key: HDFS-11492
>                 URL: https://issues.apache.org/jira/browse/HDFS-11492
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ozone
>    Affects Versions: HDFS-7240
>            Reporter: Anu Engineer
>            Assignee: Anu Engineer
>         Attachments: HDFS-11492-HDFS-7240.001.patch, HDFS-11492-HDFS-7240.002.patch,
HDFS-11492-HDFS-7240.003.patch
>
>
> Once a container report is ready datanodes sends that information to SCM. SCM returns
a command asking the data node to send container report. Add the ability to handle this command
on datanode side and send the actual container Report.



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