Jamie Jackson created SOLR-11402:
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Summary: DataImportHandler dataimport.properties should write to
data dir by default
Key: SOLR-11402
URL: https://issues.apache.org/jira/browse/SOLR-11402
Project: Solr
Issue Type: Improvement
Security Level: Public (Default Security Level. Issues are Public)
Components: contrib - DataImportHandler
Affects Versions: 6.6, 5.5, 4.10
Reporter: Jamie Jackson
Priority: Minor
Currently, DIH drops the {{dataimport.properties}} file in the cores directory
by default, but the data directory seems to be the logical choice.
* The core directory tends to be read-only.
* The data directory is the write area, and the {{dataimport.properties}} file
is tied to the index, rather than the core configurations.
Docker is a use case where the current behavior is glaringly problematic: The
cores directory lives in the container layer, and any files that Solr writes
there disappear when the container is restarted (forcing a subsequent full
index). The data directory, on the other hand, is already persisted to a volume
(according to normal practice), so if it were the default location to write
{{dataimport.properties}}, it would behave as one would expect.
It's possible to work around this (using PropertyWriter, symlinks, or other
tricks), but this shouldn't be necessary.
* Downstream Solr Docker ticket:
https://github.com/docker-solr/docker-solr/issues/150
* SOLR-1970, in which others make the same argument
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