[Fix][E2E] Fix DruidIT ConditionTimeout

[dybyte]

Purpose of this pull request

This PR fixes DruidIT CI errors.

2025-10-24T02:31:12.2037113Z [ERROR] Errors: 
2025-10-24T02:31:12.2038064Z [ERROR]   DruidIT.testDruidMultiSink:138 » ConditionTimeout Assertion condition defined ...
2025-10-24T02:31:12.2039247Z [ERROR]   DruidIT.testDruidMultiSink:138 » ConditionTimeout Assertion condition defined ...
2025-10-24T02:31:12.2040251Z [ERROR]   DruidIT.testDruidSink:105 » ConditionTimeout Assertion condition defined as a ...
2025-10-24T02:31:12.2041252Z [ERROR]   DruidIT.testDruidSink:105 » ConditionTimeout Assertion condition defined as a ...
2025-10-24T02:31:12.2041874Z [ERROR]   DruidIT.testDruidSink:105 » ConditionTimeout Assertion condition defined as a ...
2025-10-24T02:31:12.2042457Z [ERROR]   DruidIT.testDruidSink:105 » ConditionTimeout Assertion condition defined as a ...
2025-10-24T02:31:12.2043196Z [ERROR]   DruidIT.testDruidSink:105 » ConditionTimeout Assertion condition defined as a ...

I identified two root causes.

1. Druid router connection: The tests were trying to connect to 127.0.0.1:8888, which does not work inside the Docker network. The correct approach is to use the Docker Compose service name router:8888.

Caused by: org.apache.http.conn.HttpHostConnectException: Connect to 127.0.0.1:8888 [/127.0.0.1] failed: Connection refused (Connection refused)

2. PostgreSQL version: The postgres:latest image now uses a new data directory structure for version 18+, which can cause startup issues if old mounts are used. See postgres Docker update and discussion.

Does this PR introduce any user-facing change?

No

How was this patch tested?

Covered by existing tests.

Check list

• If any new Jar binary package adding in your PR, please add License Notice according
  New License Guide
• If necessary, please update the documentation to describe the new feature. https://github.com/apache/seatunnel/tree/dev/docs
• If you are contributing the connector code, please check that the following files are updated:
  1. Update plugin-mapping.properties and add new connector information in it
  2. Update the pom file of seatunnel-dist
  3. Add ci label in label-scope-conf
  4. Add e2e testcase in seatunnel-e2e
  5. Update connector plugin_config

[chl-wxp]

LGTM

[Copilot]

Pull Request Overview

This PR fixes DruidIT end-to-end test failures caused by connection issues and PostgreSQL version incompatibility. The tests were timing out because they couldn't properly connect to Druid services and the PostgreSQL metadata store had startup problems.

Key Changes:

• Updated Druid coordinator URL from localhost to Docker service name for proper container networking
• Modified PostgreSQL volume mount path to be compatible with PostgreSQL 18+ data directory structure

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
fakesource_to_druid.conf	Changed coordinator URL to use Docker service name instead of localhost
fakesource_to_druid_with_multi.conf	Changed coordinator URL to use Docker service name instead of localhost
docker-compose.yml	Updated PostgreSQL volume mount path for version 18+ compatibility

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[davidzollo]

+1
good job