I'm working with a script where I want to send a command to delete all
elements in an index; notably,


/opt/solr/bin/post -c <my collection> -d  "<delete><query>*:*</query></delete>"


When run interactively, this works fine.

However, when run automatically as a cron job, it gives this interesting
output:


Unrecognized argument:   "<delete><query>*:*</query></delete>"

If this was intended to be a data file, it does not exist relative to /root

The culprit seems to be these lines, 143-148:

         if [[ ! -t 0 ]]; then
           MODE="stdin"
         else
           # when no stdin exists and -d specified, the rest of the arguments
           # are assumed to be strings to post as-is
           MODE="args"

This code seems to be doing the opposite of what the comment says - it
sets MODE="stdin" if stdin is NOT a terminal, but if it IS (i.e., there
IS an stdin) it assumes the rest of the args can be posted as-is.

On the other hand, if the condition is reversed, my command will fail
interactively but not when run as a cron job. Both options are, of
course, unsatisfactory.

It /will/ actually work in both cases, if instead the command to delete
the contents of the index is written as:

echo "<delete><query>*:*</query></delete>" | /opt/solr/bin/post -c
departments -d


I've seen this bug in SOLR 7.5.0 and 7.7.1. Should I report it as a bug
or is there an easy explanation?


Best

Carsten Agger


-- 
Carsten Agger

Chief Technologist
Magenta ApS
Skt. Johannes Allé 2
8000 Århus C

Tlf  +45 5060 1476
http://www.magenta-aps.dk
carst...@magenta-aps.dk

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