MINOR: [Release] Update versions for 15.0.2

[amoeba]

No description provided.

[raulcd]

I am not entirely sure why the Java test for flight is failing with:

Exception java.lang.NoClassDefFoundError: io/grpc/BindableService
      at FlightServer.builder (FlightServer.java:169)
      at (#39:4)
Caused by: java.lang.ClassNotFoundException: io.grpc.BindableService
      at BuiltinClassLoader.loadClass (BuiltinClassLoader.java:641)
      at ClassLoaders$AppClassLoader.loadClass (ClassLoaders.java:188)
      at ClassLoader.loadClass (ClassLoader.java:521)

[amoeba]

I'll look into it later today and report back.

[amoeba]

I wasn't able to reproduce the error locally, though I do get a failure in the avro cookbook:

avro.rst failure

Document: avro
--------------
Error:
package org.apache.arrow.adapter.avro does not exist
import org.apache.arrow.adapter.avro.AvroToArrow;
       ^---------------------------------------^
Error:
package org.apache.arrow.adapter.avro does not exist
import org.apache.arrow.adapter.avro.AvroToArrowConfig;
       ^---------------------------------------------^
Error:
package org.apache.arrow.adapter.avro does not exist
import org.apache.arrow.adapter.avro.AvroToArrowConfigBuilder;
       ^----------------------------------------------------^
Error:
package org.apache.arrow.adapter.avro does not exist
import org.apache.arrow.adapter.avro.AvroToArrowVectorIterator;
       ^-----------------------------------------------------^
Error:
cannot find symbol
  symbol:   class AvroToArrowConfig
        AvroToArrowConfig config = new AvroToArrowConfigBuilder(allocator).build();
        ^---------------^
Error:
cannot find symbol
  symbol:   class AvroToArrowConfigBuilder
        AvroToArrowConfig config = new AvroToArrowConfigBuilder(allocator).build();
                                       ^----------------------^
Error:
cannot find symbol
  symbol:   class AvroToArrowVectorIterator
        try (AvroToArrowVectorIterator avroToArrowVectorIterator = AvroToArrow.avroToArrowIterator(schema, decoder, config)) {
             ^-----------------------^
Error:
cannot find symbol
  symbol:   variable AvroToArrow
        try (AvroToArrowVectorIterator avroToArrowVectorIterator = AvroToArrow.avroToArrowIterator(schema, decoder, config)) {
                                                                   ^---------^
-> **********************************************************************
File "avro.rst", line 65, in default
Failed example:
    import org.apache.arrow.adapter.avro.AvroToArrow;
    import org.apache.arrow.adapter.avro.AvroToArrowConfig;
    import org.apache.arrow.adapter.avro.AvroToArrowConfigBuilder;
    import org.apache.arrow.adapter.avro.AvroToArrowVectorIterator;
    import org.apache.arrow.memory.BufferAllocator;
    import org.apache.arrow.memory.RootAllocator;
    import org.apache.arrow.vector.VectorSchemaRoot;
    import org.apache.avro.Schema;
    import org.apache.avro.io.BinaryDecoder;
    import org.apache.avro.io.DecoderFactory;

    import java.io.File;
    import java.io.FileInputStream;
    import java.io.FileNotFoundException;
    import java.io.IOException;

    try {
        BinaryDecoder decoder = new DecoderFactory().binaryDecoder(new FileInputStream("./thirdpartydeps/avro/users.avro"), null);
        Schema schema = new Schema.Parser().parse(new File("./thirdpartydeps/avro/user.avsc"));
        try (BufferAllocator allocator = new RootAllocator()) {
            AvroToArrowConfig config = new AvroToArrowConfigBuilder(allocator).build();
            try (AvroToArrowVectorIterator avroToArrowVectorIterator = AvroToArrow.avroToArrowIterator(schema, decoder, config)) {
                while(avroToArrowVectorIterator.hasNext()) {
                    try (VectorSchemaRoot root = avroToArrowVectorIterator.next()) {
                        System.out.print(root.contentToTSVString());
                    }
                }
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
Expected:
    name    favorite_number    favorite_color
    Alyssa    256    null
    Ben    7    red
Got:

I'm going to re-run the failed jobs to see if it's just a transient issue and then see about the Avro issue.

[amoeba]

Hey @raulcd, I forgot about this but took another look today. I re-ran this patch locally and it works fine now? I'm not sure what might have changed.

I am able to reproduce the above grpc error on 16.0.0-SNAPSHOT so I can look into that elsewhere. Otherwise, I think this is ready for a merge.

[raulcd]

LGTM and CI is passing now.