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From "Sean Busbey (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-18393) hbase shell non-interactive broken
Date Mon, 17 Jul 2017 18:27:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-18393?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16090246#comment-16090246

Sean Busbey commented on HBASE-18393:

bq. 1. Can we break compatibility such that passing both non-interactive mode and a script
to run is no longer supported? I think a workaround for these users would be to turn usage
for the form command-generator | bin/hbase shell script -n into (cat script; command-generator)
| bin/hbase shell -n

sounds good to me, presuming this only impacts us on jruby 9k. given the major version, a
release note should be sufficient.

bq. 2. Can we presume that STDIN is bounded? Then we could read all of it up front, and treat
that like a script file.

All of the examples I've seen thus far have us reading a set of commands that are set when
we begin. I'd be comfortable making this a requirement for {{--non-interactive}}, given that
reading the results as someone goes and changing what commands are given sounds "interactive"
to me.

bq. 3. Related: do we need to process lines one at a time as we read them?

I'm missing some subtly here. Is this just a question of whether we have all the input as
a single string vs individual lines? Or the ability for lines we've read to impact reading
of successive lines (effectively limiting what the user provided input can monkey patch)?

> hbase shell non-interactive broken  
> ------------------------------------
>                 Key: HBASE-18393
>                 URL: https://issues.apache.org/jira/browse/HBASE-18393
>             Project: HBase
>          Issue Type: Bug
>          Components: scripts, shell
>    Affects Versions: 3.0.0, 2.0.0-alpha-1
>            Reporter: Samir Ahmic
>            Assignee: Samir Ahmic
>            Priority: Blocker
>             Fix For: 2.0.0-beta-1
> Here is error for command line:
> {code}
> $ echo "list" | ./hbase shell -n
> 2017-07-17 08:01:09,442 WARN  [main] util.NativeCodeLoader: Unable to load native-hadoop
library for your platform... using builtin-java classes where applicable
> ERROR NoMethodError: undefined method `encoding' for #<IO:<STDIN>>
> Did you mean?  set_encoding
> {code}

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