[
https://issues.apache.org/jira/browse/HDFS-11299?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15813013#comment-15813013
]
Xiaoyu Yao commented on HDFS-11299:
-----------------------------------
Thanks [~hanishakoneru] for updating the patch and [~arpitagarwal] for the
review.
Looks like LEN_INT can be replaced with Integer.BYTES from JDK. But
Integer.BYTES is only available in JDK1.8. It will cause more work when
backporting it to branch-2.
I'm OK with the patch v02. +1 pending Jenkins.
> Support multiple Datanode File IO hooks
> ---------------------------------------
>
> Key: HDFS-11299
> URL: https://issues.apache.org/jira/browse/HDFS-11299
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs
> Reporter: Hanisha Koneru
> Assignee: Hanisha Koneru
> Attachments: HDFS-11299.000.patch, HDFS-11299.001.patch,
> HDFS-11299.002.patch
>
>
> HDFS-10958 introduces instrumentation hooks around DataNode disk IO and
> HDFS-10959 adds support for profiling hooks to expose latency statistics.
> Instead of choosing only one hook using Config parameters, we want to add two
> separate hooks - one for profiling and one for fault injection. The fault
> injection hook will be useful for testing purposes.
> This jira only introduces support for fault injection hook. The
> implementation for that will come later on.
> Also, now Default and Counting FileIOEvents would not be needed as we can
> control enabling the profiling and fault injection hooks using config
> parameters.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
