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From "Alexey Kuznetsov (JIRA)" <j...@apache.org>
Subject [jira] [Created] (IGNITE-9792) Setting system property IGNITE_MBEANS_DISABLED to true lead to NPE.
Date Thu, 04 Oct 2018 09:29:00 GMT
Alexey Kuznetsov created IGNITE-9792:
----------------------------------------

             Summary: Setting system property IGNITE_MBEANS_DISABLED to true lead to NPE.
                 Key: IGNITE-9792
                 URL: https://issues.apache.org/jira/browse/IGNITE-9792
             Project: Ignite
          Issue Type: Bug
            Reporter: Alexey Kuznetsov


Javadocs for IGNITE_MBEANS_DISABLED: "This may be helpful if MBeans are not allowed e.g. for
security reasons."

So I set in code:

{code}

System.setProperty(IgniteSystemProperties.IGNITE_MBEANS_DISABLED, "true")

{code}

 

And on node start node failed with NPE:

{code}

Caused by: class org.apache.ignite.IgniteCheckedException: Unexpected exception when starting
grid.
 at org.apache.ignite.internal.IgnitionEx$IgniteNamedInstance.start0(IgnitionEx.java:2079)
 at org.apache.ignite.internal.IgnitionEx$IgniteNamedInstance.start(IgnitionEx.java:1728)
 at org.apache.ignite.internal.IgnitionEx.start0(IgnitionEx.java:1156)
 at org.apache.ignite.internal.IgnitionEx.start(IgnitionEx.java:676)
 at org.apache.ignite.internal.IgnitionEx.start(IgnitionEx.java:601)
 at org.apache.ignite.Ignition.start(Ignition.java:323)
 ... 3 more
Caused by: java.lang.NullPointerException: Ouch! Argument cannot be null: cfg.getMBeanServer()
 at org.apache.ignite.internal.util.GridArgumentCheck.notNull(GridArgumentCheck.java:48)
 at org.apache.ignite.internal.IgniteKernal.validateCommon(IgniteKernal.java:1355)
 at org.apache.ignite.internal.IgniteKernal.start(IgniteKernal.java:833)
 at org.apache.ignite.internal.IgnitionEx$IgniteNamedInstance.start0(IgnitionEx.java:2033)
 ... 8 more

{code}

 

The fix is trivial: in org.apache.ignite.internal.IgniteKernal#validateCommon

{code}

if (!U.IGNITE_MBEANS_DISABLED) // <<< The fix
    A.notNull(cfg.getMBeanServer(), "cfg.getMBeanServer()");

{code}

 



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