agent.sh should load adaptors from both checkpoint file and
conf/initial_adaptors
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Key: CHUKWA-415
URL: https://issues.apache.org/jira/browse/CHUKWA-415
Project: Hadoop Chukwa
Issue Type: Improvement
Reporter: Bill Graham
Currently when agent.sh is run, the agent will load the adaptors found in the
config/initial_adaptors file only of the checkpoints file doesn't exist. If the
checkpoint file does exist, the initial_adaptors file is silently ignored. This
is misleading and seems like a potential cause of confusion.
Instead both files should both be checked for adaptors, first the checkpoint
file, then the initial_adaptors file. This order would ensure that the same
adaptor won't lose it's checkpoint info or get loaded twice if the agent is
bounced.
Also, the agents.log file does a good job of reporting which adaptors are
registered, but it doesn't show where they were loaded from. This information
would be useful to have if possible.
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