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Posted to dev@lucene.apache.org by "Cassandra Targett (JIRA)" <ji...@apache.org> on 2019/04/23 13:21:00 UTC

[jira] [Resolved] (SOLR-11515) bin/post uses "-t" to check for stdin, easily breaks when run from cron (which has no terminal)

     [ https://issues.apache.org/jira/browse/SOLR-11515?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Cassandra Targett resolved SOLR-11515.
--------------------------------------
    Resolution: Duplicate

Closing as a duplicate of more recently filed SOLR-13422 since the more recent issue has been assigned.

> bin/post uses "-t" to check for stdin, easily breaks when run from cron (which has no terminal)
> -----------------------------------------------------------------------------------------------
>
>                 Key: SOLR-11515
>                 URL: https://issues.apache.org/jira/browse/SOLR-11515
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: scripts and tools
>            Reporter: Hoss Man
>            Priority: Major
>
> one of our users (matt__) spent all day on freenode#solr trying to figure out why a simple script he had that called {{bin/post}} would work fine when he ran it, but didn't seem to do anything when run as a cronjob.
> After helping him setup better logging from cron, it ultimiately came down to the fact that a command like this (which was the very first thing in his script)...
> {code}
> bin/post -c yyy -host xxx -d '<delete><query>zzz</query></delete>'
> {code}
> ...was failing with an error like this...
> {noformat}
> Unrecognized argument: <delete><query>zzz</query></delete>
> If this was intended to be a data file, it does not exist relative to /opt/blah/blah
> {noformat}
> Ultimately we determined that the problem was how {{bin/post}} tests for "stdin" -- by checking to see if it's _not_ being run in a terminal (with ' {{! -t 0}} ') -- in which case it doesn't treat the argument after {{-d}} as data, and instead lets it fall through to the next iteration of the arg parsing loop (as either another switch, or a filename)
> the problem here being that running (in a script) as a cronjob is another case where {{bin/post}} is "not being run in a terminal" so the {{-d}} parsing would up completely ignoring the {{<delete>...}} string, evne though there was nothing being redirected on stdin.
> the workaround is to use {{echo}} to give {{bin/post}} some stdin, since it was going to expect it for any usage of {{-d}}...
> {code}
> echo '<delete><query>zzz</query></delete>' | bin/post -c yyy -host xxx -d 
> {code}



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