Junegunn Choi created HBASE-30358:
-------------------------------------
Summary: TestMetaTableForReplica fails on Java 21 rewriting a
static final field
Key: HBASE-30358
URL: https://issues.apache.org/jira/browse/HBASE-30358
Project: HBase
Issue Type: Bug
Reporter: Junegunn Choi
Assignee: Junegunn Choi
h2. Problem
{{TestMetaTableForReplica.testMetaTableNameForReplicaWithSuffix}} fails on Java
21:
{noformat}
java.lang.UnsupportedOperationException: set
at
org.apache.hadoop.hbase.TestMetaTableForReplica.setStaticFinalField(TestMetaTableForReplica.java:164)
{noformat}
The test rewrites the static final {{TableName.META_TABLE_NAME}} by clearing
its {{FINAL}} bit through a VarHandle on the private {{{}Field.modifiers{}}}.
On Java 21 that VarHandle is read-only, so the write throws before
{{Field.set}} is reached.
Same family as HBASE-29547 and HBASE-29605, both closed as duplicates of
HBASE-29614. Found by the JDK 21 nightly axis added in HBASE-30354.
h2. No need for the reflection
{code:java}
TableName expected = TableName.initializeHbaseMetaTableName(conf); // compute
setStaticFinalField(metaTableName, expected); // write
the static
TableName current = TableName.META_TABLE_NAME; // read it
back
assertNotEquals(TableName.getDefaultNameOfMetaForReplica(), current);
assertEquals(expected, current);
{code}
{{current}} holds the value the line above just wrote, so
{{assertEquals(expected, current)}} can only fail if reflection itself is
broken.
h2. Fix
Assert on the return value directly and delete the reflection:
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