Details
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Bug
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Status: Resolved
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Critical
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Resolution: Fixed
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3.0.0-alpha-1, 2.0.0-alpha-4
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None
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Reviewed
Description
After HBASE-18224, Jetty has be updated to 9.4.6, and it requires more threads to start up.
If the value of hbase.rest.threads.max is too small, the rest server will fail to start.
What I observed was as follows:
1. The process did not exit. (At the beginning, I thought the rest server has been start normally because of the process exists.)
2. Can't connect to the rest server and I didn't found any exception log in ***.log.
3. the main thread has exited (jstack log).
4. Found the exception information from ***.out.
java.lang.IllegalStateException: Insufficient threads: max=5 < needed(acceptors=1 + selectors=8 + request=1)
at org.eclipse.jetty.server.Server.doStart(Server.java:414)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.apache.hadoop.hbase.rest.RESTServer.main(RESTServer.java:360)
I think the process should exit and log the information in ***.log when it happens.
So that the user can directly discover that the rest server is abnormal.