Managing collections
====================

Before you can create a collection, you need to `add the schemas
<schemas.html>`_ to Solr.

Collections are managed via the `Solr collections API`_

.. _Solr collections API: https://cwiki.apache.org/confluence/display/solr/Collections+API

SSH into the European gateway:

.. code-block:: bash

    ssh -l root 54.229.115.35

Delete existing collections
---------------------------

Collections can be deleted by calling the DELETE action and providing the name
of the collection to be deleted.

To delete the listings and categories collections:

.. code-block:: bash

    curl "http://internal-solr-eu-208802902.eu-west-1.elb.amazonaws.com:8983/solr/admin/collections?action=DELETE&name=listings&wt=json&indent=true"
    curl "http://internal-solr-eu-208802902.eu-west-1.elb.amazonaws.com:8983/solr/admin/collections?action=DELETE&name=categories&wt=json&indent=true"

A successful delete will display a result similar to:

.. code-block:: javascript

    {
      "responseHeader":{
        "status":0,
        "QTime":863},
      "success":{
        "10.0.52.137:8983_solr":{
          "responseHeader":{
            "status":0,
            "QTime":15}},
        "10.0.51.66:8983_solr":{
          "responseHeader":{
            "status":0,
            "QTime":19}},
        "10.0.51.198:8983_solr":{
          "responseHeader":{
            "status":0,
            "QTime":19}},
        "10.0.53.127:8983_solr":{
          "responseHeader":{
            "status":0,
            "QTime":21}}}}


Create new collections
----------------------

Collections are created by calling the CREATE action with the following params:

=================== =======================
 name                listings | categories
 numShards           2
 replicationFactor   2
 maxShardsPerNode    2
=================== =======================

To create the listings and categories collections:

.. code-block:: bash

    curl "http://internal-solr-eu-208802902.eu-west-1.elb.amazonaws.com:8983/solr/admin/collections?action=CREATE&name=listings&numShards=2&replicationFactor=2&maxShardsPerNode=2&wt=json&indent=true"
    curl "http://internal-solr-eu-208802902.eu-west-1.elb.amazonaws.com:8983/solr/admin/collections?action=CREATE&name=categories&numShards=2&replicationFactor=2&maxShardsPerNode=2&wt=json&indent=true"

On success will show a result similar to:

.. code-block:: bash

    {
      "responseHeader":{
        "status":0,
        "QTime":3592},
      "success":{
        "":{
          "responseHeader":{
            "status":0,
            "QTime":1882},
          "core":"listings_shard1_replica2"},
        "":{
          "responseHeader":{
            "status":0,
            "QTime":2341},
          "core":"listings_shard1_replica1"},
        "":{
          "responseHeader":{
            "status":0,
            "QTime":2661},
          "core":"listings_shard2_replica1"},
        "":{
          "responseHeader":{
            "status":0,
            "QTime":2859},
          "core":"listings_shard2_replica2"}}}