ranjeet-floyd

Kafka Topics

List existing topics

bin/kafka-topics.sh --zookeeper localhost:2181 --list

Describe a topic

bin/kafka-topics.sh --zookeeper localhost:2181 --describe --topic mytopic

Purge a topic

bin/kafka-topics.sh --zookeeper localhost:2181 --alter --topic mytopic --config retention.ms=1000

... wait a minute ...

ranjeet-floyd

org.keycloak.testsuite.KeycloakServer

-Dkeycloak.bind.address=0.0.0.0
-Djava.net.preferIPv4Stack=true
-Dkeycloak.connectionsJpa.url=jdbc:postgresql://localhost:5432/keycloak_4_x_master
-Dkeycloak.connectionsJpa.driver=org.postgresql.Driver
-Dkeycloak.connectionsJpa.driverDialect=org.hibernate.dialect.PostgreSQLDialect

ranjeet-floyd

$ brew install -v mp3wrap ffmpeg id3lib
$ mp3wrap tmp.mp3 1.mp3 2.mp3 3.mp3 ....
$ ffmpeg -i tmp_MP3WRAP.mp3 -acodec copy all.mp3 && rm tmp_MP3WRAP.mp3
$ id3cp 1.mp3 all.mp3

ranjeet-floyd

5 entertaining things you can find with the GitHub Search API

Let's have some command-line fun with curl, [jq][1], and the [new GitHub Search API][2].

Today we're looking for:

• The hottest repositories created in the last week.
• The oldest user accounts with zero followers. (So sad.)
• Issue trends by language.
• Clojure projects defying convention.

ranjeet-floyd

//==================================================================
// SPARK INSTRUMENTATION
//==================================================================

import com.codahale.metrics.{MetricRegistry, Meter, Gauge}
import org.apache.spark.{SparkEnv, Accumulator}
import org.apache.spark.metrics.source.Source
import org.joda.time.DateTime
import scala.collection.mutable