It looks as if the metadata field of CachingInvocationHandler is null. I'm
pretty sure that it should not be. Can you change its constructor from
public CachingInvocationHandler(Metadata metadata) {
this.metadata = metadata;
}
to
public CachingInvocationHandler(Metadata metadata) {
this.metadata = Preconditions.checkNotNull(metadata);
}
and work backwards to find out who is giving the bad metadata. Probably one of
your providers is badly written.
Julian
> On Mar 10, 2015, at 6:53 PM, Jesus Camachorodriguez
> <[email protected]> wrote:
>
> Hello,
>
> I was doing tests on CBO branch in Hive with the latest Calcite snapshot, and
> there is the following Exception that shows up now:
>
> java.lang.NullPointerException
> at
> org.apache.calcite.rel.metadata.CachingRelMetadataProvider$CachingInvocationHandler.invoke(CachingRelMetadataProvider.java:111)
> at com.sun.proxy.$Proxy32.rel(Unknown Source)
> at
> org.apache.calcite.rel.metadata.CachingRelMetadataProvider$CachingInvocationHandler.invoke(CachingRelMetadataProvider.java:111)
> at com.sun.proxy.$Proxy32.distribution(Unknown Source)
> at
> org.apache.calcite.rel.metadata.RelMetadataQuery.distribution(RelMetadataQuery.java:310)
> at
> org.apache.hadoop.hive.ql.optimizer.calcite.reloperators.HiveJoin.obtainJoinAlgorithms(HiveJoin.java:257)
> at
> org.apache.hadoop.hive.ql.optimizer.calcite.reloperators.HiveJoin.chooseJoinAlgorithmAndGetCost(HiveJoin.java:148)
> at
> org.apache.hadoop.hive.ql.optimizer.calcite.reloperators.HiveJoin.computeSelfCost(HiveJoin.java:140)
> at
> org.apache.calcite.rel.metadata.RelMdPercentageOriginalRows.getNonCumulativeCost(RelMdPercentageOriginalRows.java:165)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:606)
> at
> org.apache.calcite.rel.metadata.ReflectiveRelMetadataProvider$2$1.invoke(ReflectiveRelMetadataProvider.java:194)
> at com.sun.proxy.$Proxy25.getNonCumulativeCost(Unknown Source)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:606)
> at
> org.apache.calcite.rel.metadata.ChainedRelMetadataProvider$ChainedInvocationHandler.invoke(ChainedRelMetadataProvider.java:109)
> at com.sun.proxy.$Proxy25.getNonCumulativeCost(Unknown Source)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:606)
> at
> org.apache.calcite.rel.metadata.CachingRelMetadataProvider$CachingInvocationHandler.invoke(CachingRelMetadataProvider.java:131)
> at com.sun.proxy.$Proxy25.getNonCumulativeCost(Unknown Source)
> at
> org.apache.calcite.rel.metadata.RelMetadataQuery.getNonCumulativeCost(RelMetadataQuery.java:115)
> ...
>
> Any feedback on this problem?
>
> Thanks,
> Jesús
>
