ES

• Error: ElasticsearchStatusException[Elasticsearch exception [type=search_phase_execution_exception, reason=all shards failed]]

• Solution/Reason: Fielddata was disabled

• Caution: The solution isn't always to turn on fielddata since turning it on will increase the memory consumption by ES (because it creates an inverted index) instead append .keyword to the field name as a workaround.

• Text fields: These are analyzed fields that can be used for full-text search (exact matches are not needed and docs can be searched using tokens)

• Keyword fields: These are non-analyzed fields that are used for keyword search (need exact matches to return docs)

Golang ES

• To view the structure of a constructed query do this

 src, _ := finalQuery.Source()
blah, _ := json.Marshal(src)
fmt.Println(string(blah), "\n")

• Access locally running elasticsearch instace from a docker container by adding this to the ES config file and using this url from the code running in the container http://172.17.0.1:9200

 network.host: 0.0.0.0
 transport.host: localhost
 transport.tcp.port: 9300

Docker

Error: docker/compose#4950 Notes: Port was already free Solution: Restart the docker daemon

Git

• Delete a commit in the middle of the log git rebase -i <commit-hash>~1, editor opens up, delete the commits that are not required and make sure any subsequent commits don't cause merge conflicts. If not then rebase will do the rest of the job.

Linux

• To check for services enabled on startup and to disable th- em use the following systemctl is-enabled SERVICE systemctl disable SERVICE systemctl is-enabled SERVICE systemctl disable SERVICE
• In case llvm install fails because of no public key take a look at this