How to load extensions?

[lmurawsk]

Hi,

i'm trying to load extensions by placing their names in -Ddruid.extensions.loadList of [program:druid-coordinator] section in supervisord.conf. An excerpt from my supervisord.conf file is the following:

[...]

[program:druid-coordinator]
user=druid
command=java
  -server
  -Xmx1g
  -Duser.timezone=UTC
  -Dfile.encoding=UTF-8
  -Ddruid.host=%(ENV_HOSTIP)s
  -Ddruid.extensions.loadList=[\"mysql-metadata-storage\", \"druid-avro-extensions\"]
  -Ddruid.extensions.directory=/usr/local/druid/extensions
  -Ddruid.extensions.hadoopDependenciesDir=/usr/local/druid/hadoop-dependencies
  -Ddruid.metadata.storage.type=mysql
  -Ddruid.metadata.storage.connector.connectURI=jdbc:mysql://localhost:3306/druid
  -Ddruid.metadata.storage.connector.user=druid
  -Ddruid.metadata.storage.connector.password=diurd
  -Ddruid.coordinator.asOverlord.enabled=true
  -Ddruid.coordinator.asOverlord.overlordService=druid/overlord
  -Ddruid.indexer.fork.property.druid.processing.numThreads=1
  -Ddruid.indexer.storage.type=metadata
  -Ddruid.indexer.queue.startDelay=PT0M
  -Ddruid.indexer.runner.javaOpts="-server -Xmx1g -XX:MaxDirectMemorySize=2147483648"
  -Ddruid.processing.buffer.sizeBytes=536870912
  -Ddruid.coordinator.startDelay=PT5S
  -cp /usr/local/druid/lib/*
  io.druid.cli.Main server coordinator
redirect_stderr=true
priority=100

[...]

Unfortunately, i keep getting the following error in druid-coordinator-stdout---supervisor.log:
Error: Could not find or load main class "druid-avro-extensions"

Folder druid-avro-extensions with .jars (f.eg. druid-avro-extensions-0.10.1.jar) exists in /usr/local/druid/extensions with druid:druid owner.

Unfortunately i can't load any other extension due to the similar error so i must be missing something.

The question is - how to successfully load an extension? Any advice highly appreciated.

DRUID_VERSION 0.10.1.

Regards,
Łukasz

[visaxin]

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