Ruben Q L created CALCITE-4393:
----------------------------------
Summary: ExceptionInInitializerError due to NPE in SqlCallBinding
caused by circular dependency
Key: CALCITE-4393
URL: https://issues.apache.org/jira/browse/CALCITE-4393
Project: Calcite
Issue Type: Bug
Reporter: Ruben Q L
Assignee: Ruben Q L
Fix For: 1.27.0
See discussion here:
https://lists.apache.org/thread.html/red0fc146f78a196af6fdaa5393b2c0906e0a49361a1734a850185777%40%3Cdev.calcite.apache.org%3E
ExceptionInInitializerErroron WebSphere 9 (on Ubuntu) when trying to start an
application that uses Calcite (shaded) library. The exception message reads:
{noformat}
** error [-]: Unexpected error.
** ...
** Caused by: java.lang.BootstrapMethodError:
java.lang.ExceptionInInitializerError
**
com.onwbp.org.apache.calcite.sql.type.InferTypes.<clinit>(InferTypes.java:41)
**
com.onwbp.org.apache.calcite.sql.fun.SqlMultisetSetOperator.<init>(SqlMultisetSetOperator.java:43)
**
com.onwbp.org.apache.calcite.sql.fun.SqlStdOperatorTable.<clinit>(SqlStdOperatorTable.java:118)
**
com.onwbp.org.apache.calcite.adapter.enumerable.RexToLixTranslator.<clinit>(RexToLixTranslator.java:93)
** java.lang.Class.forNameImpl(Native Method)
** java.lang.Class.forName(Class.java:348)
**
java.lang.invoke.MethodType.nonPrimitiveClassFromString(MethodType.java:311)
**
java.lang.invoke.MethodType.parseIntoClasses(MethodType.java:373)
**
java.lang.invoke.MethodType.fromMethodDescriptorString(MethodType.java:286)
** java.lang.invoke.MethodHandle.getCPMethodTypeAt(Native Method)
**
java.lang.invoke.MethodHandle.resolveInvokeDynamic(MethodHandle.java:849)
** ... 74 more
** Caused by: java.lang.ExceptionInInitializerError
** java.lang.J9VMInternals.ensureError(J9VMInternals.java:141)
**
java.lang.J9VMInternals.recordInitializationFailure(J9VMInternals.java:130)
** java.lang.Class.forNameImpl(Native Method)
** java.lang.Class.forName(Class.java:348)
**
java.lang.invoke.MethodType.nonPrimitiveClassFromString(MethodType.java:311)
**
java.lang.invoke.MethodType.parseIntoClasses(MethodType.java:373)
**
java.lang.invoke.MethodType.fromMethodDescriptorString(MethodType.java:286)
** java.lang.invoke.MethodHandle.getCPMethodTypeAt(Native Method)
**
java.lang.invoke.MethodHandle.resolveInvokeDynamic(MethodHandle.java:849)
** ... 85 more
** Caused by: java.lang.NullPointerException
**
com.onwbp.org.apache.calcite.sql.SqlCallBinding.<clinit>(SqlCallBinding.java:60)
** ... 92 more
****** 1 errors, 5 infos.
{noformat}
As we can see there is a NPE in
[SqlCallBinding:60|https://github.com/apache/calcite/blob/2e9edae7fc57ab9c9c7c097008724ac99a1791a3/core/src/main/java/org/apache/calcite/sql/SqlCallBinding.java#L60],
when it tries to call a method on SqlStdOperatorTable.DEFAULT, which seems to
be null.
According to the logs, what I think is happening is a circular dependency issue
when classes get loaded (more details in first comment).
However, so far I have only seen this error in WebSphere, in other environments
the same application is correctly initialized and launched, and this exception
does not happen.
Since WebSphere uses IBM's own JVM, my hypothesis is that its class loader
follows a different (and unlucky) order to load Calcite classes.
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