Tweets data

This tool processes zipped files in .jsonl format containing tweets' data (The tool is configured to process all data files with the suffix .jsonl.gz in the ./data directory).

Official documentation of the tweet json can be found here here.

The test data I've been using were 41 .jsonl.gz files of size 5.65 GB altogether. After unpacking, the data has 40 GB. The code now uses the streaming library, but materializes the chunks that are imported. The chunk size is hardcoded to 5000 tweets.

Disclaimer: The data has more fields than finally used for parsing (parsed fields can be seen in the models).

Running

The following is the usage:

tweets-import --import [Postgres,Elastic] --connection-file FILE

There are example connection files in the root of the repository:

• elastic_connection.json
• pg_connection.json

Elastic search import

This is importing the data from the .jsonl files right into the ElasticSearch. In time of coding this, the last available version of Elastic was used (i.e. 7.10). It is using the Elastic bulk API. I'm using the index bulk command. The Elastic nodes are defined in the docker-compose (I'm using 3 nodes).

The data is being imported into a single index called tweets using the mapping defined in the ./esTweetIndexMapping.json file. I'm using 3 shards and 1 replica setup for this index.

The imported data (mentioned in the beginning) has total of 9.1 GB inside the Elastic.

PosgreSQL import

All the logic for this import is inside the Postgres module. The data can be imported to a PostgreSQL database according to the following model: