mickjermsurawong-stripe commented on pull request #1531:
URL: https://github.com/apache/iceberg/pull/1531#issuecomment-703944728


   Propagating the causes now should give stacktrace for these two cases:
   
   ```
    java.lang.IllegalArgumentException: Unable to find a constructor for 
implementation 
org.apache.iceberg.TestLocationProvider$InvalidArgTypesDynamicallyLoadedLocationProvider
 of interface org.apache.iceberg.io.LocationProvider. Make sure the 
implementation is in classpath, and that it either has a public no-arg 
constructor or a two-arg constructor taking in the string base table location 
and its property string map.
           at 
org.apache.iceberg.LocationProviders.locationsFor(LocationProviders.java:48)
           at 
org.apache.iceberg.TestTables$TestTableOperations.locationProvider(TestTables.java:212)
           at org.apache.iceberg.BaseTable.locationProvider(BaseTable.java:199)
           at 
org.apache.iceberg.TestLocationProvider.testInvalidArgTypesDynamicallyLoadedLocationProvider(TestLocationProvider.java:208)
   
           Caused by:
           java.lang.NoSuchMethodException: Cannot find constructor for 
interface org.apache.iceberg.io.LocationProvider
                   Missing 
org.apache.iceberg.TestLocationProvider$InvalidArgTypesDynamicallyLoadedLocationProvider()
 [java.lang.NoSuchMethodException: 
org.apache.iceberg.TestLocationProvider$InvalidArgTypesDynamicallyLoadedLocationProvider.<init>()]
                   Missing 
org.apache.iceberg.TestLocationProvider$InvalidArgTypesDynamicallyLoadedLocationProvider(java.lang.String,java.util.Map)
 [java.lang.NoSuchMethodException: 
org.apache.iceberg.TestLocationProvider$InvalidArgTypesDynamicallyLoadedLocationProvider.<init>(java.lang.String,
 java.util.Map)]
   ```
   
   and
   
   ```
   java.lang.IllegalArgumentException: Provided implementation for dynamic 
instantiation should implement interface org.apache.iceberg.io.LocationProvider.
           at 
org.apache.iceberg.LocationProviders.locationsFor(LocationProviders.java:59)
           at 
org.apache.iceberg.TestTables$TestTableOperations.locationProvider(TestTables.java:212)
           at org.apache.iceberg.BaseTable.locationProvider(BaseTable.java:199)
           at 
org.apache.iceberg.TestLocationProvider.testInvalidNoInterfaceDynamicallyLoadedLocationProvider(TestLocationProvider.java:190)
   
           Caused by:
           java.lang.ClassCastException: 
org.apache.iceberg.TestLocationProvider$InvalidNoInterfaceDynamicallyLoadedLocationProvider
 cannot be cast to org.apache.iceberg.io.LocationProvider
               at 
org.apache.iceberg.LocationProviders.locationsFor(LocationProviders.java:56)
               ... 3 more
   ```


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