Apache Hbase: API Client fails with “No common protection layer between client and server”

ByJerry Richard

Symptom:

When a client tries to connect to the Hbase server and fails with the below exception

INFO  org.apache.hadoop.hbase.client.RpcRetryingCallerImpl - Call exception, tries=4, retries=9, started=5060 ms ago, cancelled=false, msg=Call to <Region host>:<region port> failed on local exception: javax.security.sasl.SaslException: No common protection layer between client and server

Root Cause:

“SaslException: No common protection layer between client and server” shows a difference in the server-side configuration vs client-side configuration.

example: client configuration “hadoop.rpc.protection” should be exactly match the server side configuration

hadoop.rpc.protection can either be set as the below value and it should match client and server config

hadoop.rpc.protection

  • authentication : authentication only (default)
  • integrity : integrity check in addition to authentication
  • privacy : data encryption in addition to integrity

Solution:

Recommendation is to Download latest hbase-site.xml from the server and compare it with the client configuration

For the cluster managed by Cloudera Manager:

Download the config from CM -> instance -> Hbase master -> processes -> hbase-site.xml

For other clusters:

SSH to Hbase master -> processes directory -> Latest Hbase master process dir -> get the hbase-site.xml

Ideally, hbase-site.xml should match all the property and it value (especially hbase.rpc.protection) between the client and the server

Good Luck with your Learning

Jerry Richard

Jerry grew up in a small town where he enjoyed playing video games. Once out of the nest, he pursued a Bachelor's degree in Computer Engineering. After college, he ultimately landed in the IT industry. Currently, he has over 10 years of experience. In his spare time, Jerry enjoys spending time with his family.

He is creator of this website - learnerkb.com, A website dedicated to share the mistake and experience learned.

Check my bio for more information About Me

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