[#10844] fix(hive): close HiveClientFactory on pool shutdown

[yuqi1129]

What changes were proposed in this pull request?

This PR makes Hive client classloader cleanup deterministic when Hive client pools are closed.

• Override HiveClientPool#close() to call super.close() and then always close HiveClientFactory in finally.
• Add TestHiveClientPool assertion to verify factory-close path is invoked.
• Add dev/ci/hive_catalog_oom_repro.sh stress script to repeatedly create schema/table, load table, and drop catalog for long-run metaspace/OOM reproduction.

Why are the changes needed?

HiveClientFactory owns backendClassLoader (HiveClientClassLoader) and only closes it in HiveClientFactory#close().
Previously, HiveClientPool only closed pooled HiveClient instances, so the factory close path could be skipped, making classloader cleanup depend on GC timing and causing classloader accumulation under long-running churn.

Fix: #10844

Does this PR introduce any user-facing change?

No API changes.
A new internal CI/dev stress script is added for reproduction and verification.

How was this patch tested?

• ./gradlew :catalogs:hive-metastore-common:test --tests org.apache.gravitino.hive.TestHiveClientPool --no-daemon
• bash -n dev/ci/hive_catalog_oom_repro.sh

[Copilot]

Pull request overview

This PR makes Hive client classloader cleanup deterministic by ensuring HiveClientFactory is always closed when a HiveClientPool is shut down, and adds tooling to help reproduce long-running Hive catalog churn/metaspace issues.

Changes:

• Override HiveClientPool#close() to call super.close() and then close the underlying HiveClientFactory in a finally block.
• Extend TestHiveClientPool to assert the factory-close path is invoked.
• Add a dev/ci/hive_catalog_oom_repro.sh stress script that repeatedly creates/drops Hive catalogs/schemas/tables.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

File	Description
dev/ci/hive_catalog_oom_repro.sh	Adds a churn/stress repro script for long-run metaspace/OOM investigation.
catalogs/hive-metastore-common/src/test/java/org/apache/gravitino/hive/TestHiveClientPool.java	Adds verification that the pool’s factory-close path is executed on close.
catalogs/hive-metastore-common/src/main/java/org/apache/gravitino/hive/HiveClientPool.java	Ensures HiveClientFactory (and its classloader) is closed deterministically when the pool closes.

[github-actions]

Code Coverage Report

Overall Project	65.27%	🟢
Files changed	71.43%	🟢

Module	Coverage
aliyun	1.73%	🔴
api	47.27%	🟢
authorization-common	85.96%	🟢
aws	1.1%	🔴
azure	2.6%	🔴
catalog-common	10.2%	🔴
catalog-fileset	80.02%	🟢
catalog-glue	75.36%	🟢
catalog-hive	81.83%	🟢
catalog-jdbc-clickhouse	79.06%	🟢
catalog-jdbc-common	43.93%	🟢
catalog-jdbc-doris	80.28%	🟢
catalog-jdbc-hologres	54.03%	🟢
catalog-jdbc-mysql	79.23%	🟢
catalog-jdbc-oceanbase	78.38%	🟢
catalog-jdbc-postgresql	82.05%	🟢
catalog-jdbc-starrocks	78.27%	🟢
catalog-kafka	77.01%	🟢
catalog-lakehouse-generic	45.07%	🟢
catalog-lakehouse-hudi	79.1%	🟢
catalog-lakehouse-iceberg	87.16%	🟢
catalog-lakehouse-paimon	77.71%	🟢
catalog-model	77.72%	🟢
cli	44.51%	🟢
client-java	77.63%	🟢
common	48.67%	🟢
core	81.47%	🟢
filesystem-hadoop3	76.97%	🟢
flink	40.55%	🟢
flink-runtime	0.0%	🔴
gcp	14.2%	🔴
hadoop-common	10.39%	🔴
hive-metastore-common	46.83% +0.31%	🟢
iceberg-common	55.2%	🟢
iceberg-rest-server	67.25%	🟢
integration-test-common	0.0%	🔴
jobs	66.17%	🟢
lance-common	23.88%	🔴
lance-rest-server	57.84%	🟢
lineage	53.02%	🟢
optimizer	82.95%	🟢
optimizer-api	21.95%	🔴
server	85.62%	🟢
server-common	69.76%	🟢
spark	32.79%	🔴
spark-common	39.09%	🔴
trino-connector	34.27%	🔴

Files

Module	File	Coverage
hive-metastore-common	HiveClientPool.java	71.43%	🟢

[diqiu50]

LGTM