Thanks for the answers. Indeed, WebSphere uses IBM's own JVM, and my hypothesis is that its class loader follows a different (and unlucky) order to load Calcite classes. I will continue digging into it, see if I can isolate the problem, and open a Jira if there is in fact something to be addressed on Calcite's side. Ruben
On Fri, Nov 6, 2020 at 12:10 AM Julian Hyde <jhyde.apa...@gmail.com> wrote: > As you’re using Websphere, it’s possible you’re using IBM’s Java runtime. > Is that so? > > Julian > > > > On Nov 5, 2020, at 2:23 PM, Stamatis Zampetakis <zabe...@gmail.com> > wrote: > > > > Hi Ruben, > > > > Since you mentioned WebSphere I am wondering if it is related to some > weird > > problem in the ClassLoader. > > If it was only a JVM problem I guess it could be reproduced outside of > > WebSphere just by referencing a few Calcite classes in some specific > order. > > > > Other than that, it is better to use JIRA when you have code and > > stacktraces; the formatting is helpful. > > > > Best, > > Stamatis > > > > On Thu, Nov 5, 2020 at 10:00 AM Ruben Q L <rube...@gmail.com> wrote: > > > >> Hello everyone, > >> > >> I'm getting a strange error on WebSphere 9 (on Ubuntu) when trying to > start > >> an application that uses Calcite (shaded) library. The exception message > >> says: > >> > >> ** 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. > >> > >> > >> As we can see there is a NPE in SqlCallBinding:60, when it tries to > call a > >> method on SqlStdOperatorTable.DEFAULT, which seems to be null [0]. > >> According to the logs, what I think is happening is a circular > dependency > >> issue when classes get loaded [1]. > >> 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. > >> > >> Has anyone ever seen an issue like this? > >> Thanks, > >> Ruben > >> > >> WebSphere version is: > >> Integrated Solutions Console, 9.0.0.1 > >> Build Number: cf011636.02 > >> Build Date: 9/6/16 > >> > >> It uses java 8: > >> java version "1.8.0" > >> Java(TM) SE Runtime Environment (build pxa6480sr3fp11-20160817_02(SR3 > >> FP11)) > >> IBM J9 VM (build 2.8, JRE 1.8.0 Linux amd64-64 Compressed References > >> 20160816_315341 (JIT enabled, AOT enabled) > >> J9VM - R28_20160816_1459_B315341 > >> JIT - tr.r14.java.green_20160726_121883 > >> GC - R28_20160816_1459_B315341_CMPRSS > >> J9CL - 20160816_315341) > >> JCL - 20160816_01 based on Oracle jdk8u101-b13 > >> > >> [0] > >> > >> > https://github.com/apache/calcite/blob/2e9edae7fc57ab9c9c7c097008724ac99a1791a3/core/src/main/java/org/apache/calcite/sql/SqlCallBinding.java#L60 > >> > >> [1] > >> *1) RexToLixTranslator.java* > >> > >> /*90*/ public class RexToLixTranslator implements > >> RexVisitor<RexToLixTranslator.Result> {/*91*/ public static final > >> Map<Method, SqlOperator> JAVA_TO_SQL_METHOD_MAP =/*92*/ > >> Util.mapOf(/*93*/ findMethod(String.class, "toUpperCase"), > >> SqlStdOperatorTable.UPPER,// --> LOAD SqlStdOperatorTable > >> > >> *2) SqlStdOperatorTable.java* > >> > >> /*118*/ public static final SqlMultisetSetOperator > >> MULTISET_UNION_DISTINCT =/*119*/ new > >> SqlMultisetSetOperator("MULTISET UNION DISTINCT", 14, false);// --> > >> LOAD SqlMultisetSetOperator > >> > >> *3) SqlMultisetSetOperator.java* > >> > >> /*42*/ public SqlMultisetSetOperator(String name, int prec, boolean > >> all) {/*43*/ super(/*44*/ name,/*45*/ > >> SqlKind.OTHER,/*46*/ prec,/*47*/ true,/*48*/ > >> ReturnTypes.MULTISET_NULLABLE,/*49*/ InferTypes.FIRST_KNOWN, // > >> --> LOAD InferTypes/*50*/ > >> OperandTypes.MULTISET_MULTISET);/*51*/ this.all = all;/*52*/ } > >> > >> *4) InferTypes.java* > >> > >> /*41*/ public static final SqlOperandTypeInference FIRST_KNOWN > >> =/*42*/ (callBinding, returnType, operandTypes) -> {/*43*/ > >> final RelDataType unknownType =/*44*/ > >> callBinding.getValidator().getUnknownType();/*45*/ RelDataType > >> knownType = unknownType;/*46*/ for (SqlNode operand : > >> callBinding.operands()) {/*47*/ knownType = > >> SqlTypeUtil.deriveType(callBinding, operand);/*48*/ if > >> (!knownType.equals(unknownType)) {/*49*/ break;/*50*/ > >> }/*51*/ } > >> // --> LOAD SqlCallBinding > >> > >> *5) SqlCallBinding.java* > >> > >> /*59*/ private static final SqlCall DEFAULT_CALL =/*60*/ > >> SqlStdOperatorTable.DEFAULT.createCall(SqlParserPos.ZERO);// > >> SqlStdOperatorTable is still loading in 2)! > >> SqlStdOperatorTable.DEFAULT in SqlStdOperatorTable:185 is null => NPE! > >> > >
