hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Yang Yun (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-12964) Read a opened file timely and effectively when it's being written by other
Date Wed, 27 Dec 2017 01:52:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-12964?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Yang Yun updated HDFS-12964:
----------------------------
    Description: One thread opens a HDFS file and keeps writing.  Another thread opens same
file and keeps reading it at the same time, also want to get the newest content of file. that
happens in many environments, for example, in some message transmission applications. And
it also requires the new content can be read timely and effectively, for there maybe many
tasks are working in same time.  (was: One thread opens a HDFS file and keep writing.  Another
thread opens same file and keep reading it at the same time, also want to get the newest content
of file. that happens at in many environments, for example, in some message transmission applications.
And it also requires the new content can be read timely and effectively, for there maybe many
tasks are working in same time.)

> Read a opened file timely and effectively when it's being written by other
> --------------------------------------------------------------------------
>
>                 Key: HDFS-12964
>                 URL: https://issues.apache.org/jira/browse/HDFS-12964
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: hdfs-client
>            Reporter: Yang Yun
>            Priority: Minor
>         Attachments: HADOOP-12964.001.patch
>
>
> One thread opens a HDFS file and keeps writing.  Another thread opens same file and keeps
reading it at the same time, also want to get the newest content of file. that happens in
many environments, for example, in some message transmission applications. And it also requires
the new content can be read timely and effectively, for there maybe many tasks are working
in same time.



--
This message was sent by Atlassian JIRA
(v6.4.14#64029)

---------------------------------------------------------------------
To unsubscribe, e-mail: hdfs-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: hdfs-issues-help@hadoop.apache.org


Mime
View raw message