master: master: unknown error

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When kafka creates new consumers, it simply concatenate the name of your VM to generate the consumer id. So, your VM resolves localhost as the name of your VM, not whatever you had set. To solve, add kafka(or the name of VM) plus address to /etc/hosts

Solutions on the web

via Stack Overflow by Mahtab
, 1 year ago
Princess-Mahtab: Princess-Mahtab: unknown error
via GitHub by core23
, 1 year ago
5929616b9f0b: 5929616b9f0b: unknown error
via by Unknown author, 1 year ago master: master: unknown error
at Method)
at org.apache.spark.util.Utils$.findLocalInetAddress(Utils.scala:789)
at org.apache.spark.util.Utils$.org$apache$spark$util$Utils$$localIpAddress$lzycompute(Utils.scala:782)
at org.apache.spark.util.Utils$.org$apache$spark$util$Utils$$localIpAddress(Utils.scala:782)
at org.apache.spark.util.Utils$$anonfun$localHostName$1.apply(Utils.scala:839)
at scala.Option.getOrElse(Option.scala:121)
at org.apache.spark.util.Utils$.localHostName(Utils.scala:839)
at org.apache.spark.SparkContext.(SparkContext.scala:420)
at undefined.TestMain$.main(TestMain.scala:8)
at undefined.TestMain.main(TestMain.scala)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(
at sun.reflect.DelegatingMethodAccessorImpl.invoke(
at java.lang.reflect.Method.invoke(

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