Apache Solr Reference Guide Covering Apache Solr 6.0

When using the blob store, note that the API does not delete or overwrite a previous object if a new one is
uploaded with the same name. It always adds a new version of the blob to the index. Deletes can be performed
with standard REST delete commands.
The blob store is only available when running in SolrCloud mode. Solr in standalone mode does not support
use of a blob store.
The blob store API is implemented as a requestHandler. A special collection named ".system" must be created
as the collection that contains the blob store index.
Create a .system Collection
Before using the blob store, a special collection must be created and it must be named .system.
The BlobHandler is automatically registered in the .system collection. The solrconfig.xml, Schema, and
other configuration files for the collection are automatically provided by the system and don't need to be defined
specifically.
If you do not use the -shards or -replicationFactor options, then defaults of 1 shard and 1 replica will be
used.
You can create the .system collection with the Collections API, as in this example:
curl
"http://localhost:8983/solr/admin/collections?action=CREATE&name=.system&replication
Factor=2"
Note that the bin/solr script cannot be used to create the .system collection at this time. Also, please
ensure that there is at least one collection created before creating the .system collection.
Upload Files to Blob Store
After the .system collection has been created, files can be uploaded to the blob store with a request similar to
the following:
curl -X POST -H 'Content-Type: application/octet-stream' --data-binary @{filename}
http://localhost:8983/solr/.system/blob/{blobname}
For example, to upload a file named "test1.jar" as a blob named "test", you would make a POST request like:
curl -X POST -H 'Content-Type: application/octet-stream' --data-binary @test1.jar
http://localhost:8983/solr/.system/blob/test
A GET request will return the list of blobs and other details:
curl http://localhost:8983/solr/.system/blob?omitHeader=true
Output:
Apache Solr Reference Guide 6.0
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