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https://issues.apache.org/jira/browse/IGNITE-4405?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15760695#comment-15760695
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Taras Ledkov commented on IGNITE-4405:
--------------------------------------

Note: {{HadoopDataOutStream.writeBytes}} violates contract of the 
{{DataOutput.writeBytes}}. One is implemented via {{writeUTF}} with writing 
length of string and bytes transformation. I've used {{out.write(byte[], int , 
int)}} at the test to write the string that can be read by {{readLine}}. May be 
we have to refactor string methods a bit.

> Hadoop: support "readLine" method in HadoopDataInStream and 
> HadoopDirectDataInput classes.
> ------------------------------------------------------------------------------------------
>
>                 Key: IGNITE-4405
>                 URL: https://issues.apache.org/jira/browse/IGNITE-4405
>             Project: Ignite
>          Issue Type: Task
>          Components: hadoop
>    Affects Versions: 1.8
>            Reporter: Vladimir Ozerov
>            Assignee: Taras Ledkov
>             Fix For: 2.0
>
>
> They are simply not implemented now.



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