Guangxu Cheng created HBASE-18880:
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Summary: Failed to start rest server if the value of
hbase.rest.threads.max is too small.
Key: HBASE-18880
URL: https://issues.apache.org/jira/browse/HBASE-18880
Project: HBase
Issue Type: Bug
Components: REST
Reporter: Guangxu Cheng
Assignee: Guangxu Cheng
Fix For: 3.0.0, 2.0.0-alpha-4
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.
{code}
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)
{code}
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.
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