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https://issues.apache.org/jira/browse/BEAM-8364?focusedWorklogId=476163&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-476163
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ASF GitHub Bot logged work on BEAM-8364:
----------------------------------------
Author: ASF GitHub Bot
Created on: 29/Aug/20 20:27
Start Date: 29/Aug/20 20:27
Worklog Time Spent: 10m
Work Description: stale[bot] commented on pull request #11981:
URL: https://github.com/apache/beam/pull/11981#issuecomment-683338474
This pull request has been closed due to lack of activity. If you think that
is incorrect, or the pull request requires review, you can revive the PR at any
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Issue Time Tracking
-------------------
Worklog Id: (was: 476163)
Time Spent: 1h (was: 50m)
> SchemaCoder inconsistent equality behavior for POJO
> ---------------------------------------------------
>
> Key: BEAM-8364
> URL: https://issues.apache.org/jira/browse/BEAM-8364
> Project: Beam
> Issue Type: Bug
> Components: dsl-sql, sdk-java-core
> Affects Versions: 2.16.0
> Reporter: Neville Li
> Priority: P3
> Time Spent: 1h
> Remaining Estimate: 0h
>
> One can create a {{SchemaCoder}} for arbitrary type {{T}} with
> {{SchemaCoder.of(schema, toRowFunction, fromRowFunction)}}. However, in cases
> where {{T}} lacks proper equality behavior, i.e. POJO, the result coder still
> returns true for {{consistentWithEquals}} and {{structuralValue}}s that fail
> equality check.
> This test reproduces the issue.
> {code:java}
> import org.apache.beam.sdk.schemas.Schema;
> import org.apache.beam.sdk.schemas.SchemaCoder;
> import org.apache.beam.sdk.values.Row;
> import org.junit.Test;
> import org.junit.runner.RunWith;
> import org.junit.runners.JUnit4;
> import java.nio.charset.Charset;
> import static org.junit.Assert.*;
> @RunWith(JUnit4.class)
> public class SchemaCoderTest {
> public static class Pojo {
> private final byte[] bytes;
> private final String id;
> public Pojo(byte[] bytes, String id) {
> this.bytes = bytes;
> this.id = id;
> }
> public byte[] getBytes() {
> return bytes;
> }
> public String getId() {
> return id;
> }
> }
> @Test
> public void testCoder() {
> Schema schema =
> Schema.builder().addByteArrayField("bytes").addStringField("id").build();
> SchemaCoder<Pojo> coder = SchemaCoder.<Pojo>of(
> schema,
> t -> Row.withSchema(schema).addValues(t.getBytes(),
> t.getId()).build(),
> r -> new Pojo(r.getBytes("bytes"), r.getString("id")));
> Pojo p1 = new Pojo("hello".getBytes(Charset.forName("UTF-8")), "world");
> Pojo p2 = new Pojo("hello".getBytes(Charset.forName("UTF-8")), "world");
> assertNotEquals(p1, p2); // EXPECTED, p1.equals(p2) == false
> assertFalse(coder.consistentWithEquals()); // FAIL, returns true
> assertEquals(coder.structuralValue(p1), coder.structuralValue(p2)); //
> FAIL
> }
> }
> {code}
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