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Solr to Elasticsearch Migrator

This will migrate a Solr node to an Elasticsearch index.

Requirements

  • Python 3+
    • elasticsearch
    • pysolr

Usage

usage: solr-to-es [-h] [--solr-query SOLR_QUERY] [--solr-fields COMMA_SEP_FIELDS]
                  [--rows-per-page ROWS_PER_PAGE] [--es-timeout ES_TIMEOUT]
                  solr_url elasticsearch_url elasticsearch_index doc_type

The following example will page through all documents on the local Solr, and submit them to the local Elasticsearch server in the index es_index with a document type of solr_docs.

solr-to-es http://localhost:8983/solr/<<collection_name>> http://localhost:9200 <<collection_name>> solr_docs

solr_url is the full url to your Solr,

elasticsearch_url is the url of your Elasticsearch server.

elasticsearch_index is the index you will submit the Solr documents to on Elasticsearch.

doc_type is the type of document Elasticsearch should assume you are importing.

--solr-query defaults to *:*

--solr-fields defaults to (i.e. all fields)

--rows-per-page defaults to 500

--es-timeout defaults to 60

--es-user for authentication in Elasticsearch

--es-password for authentication in Elasticsearch

--es-max-retries maximum number of times a document will be retried when 429 is received, set to 0 for no retries on 429

--es-initial-backoff number of seconds we should wait before the first retry. Any subsequent retries will be powers of initial_backoff * 2**retry_number

Install

Run python setup.py install to install the script.

Demo

Here is an example of grabbing the over 114 thousand journal articles from Plos.org API about animals.

docker run -p 9200:9200 -p 9300:9300 -e "discovery.type=single-node" elasticsearch

solr-to-es --solr-query animal http://api.plos.org/search localhost:9200 es_plos solr_docs

curl http://localhost:9200/_cat/indices?v

Note: that you will get an 403 Forbidden error from the script, and that is because the solr.quepid.com doesn't allow deep paging, however you will have documents in your ES cluster.