[improve] [bookie] Enable forceAllowCompaction by default

[hangc0276]

Fixes #xyz

Main Issue: #xyz

PIP: #xyz

Motivation

When the ledger disk usage reaches 95%, the bookie will run into read-only mode. At the same time, the minor and major compaction will be disabled, which means there is no way to trigger the bookie garbage collection except by increasing the ledger disk size. It will be hard for the Pulsar Ops guys to maintain the BookKeeper cluster.

In order to support trigger major/minor compaction through REST API when the bookie disk usage reaches 95%, I pushed one PR on BookKeeper apache/bookkeeper#3205. However, it still needs to enable the forceAllowCompaction in the BookKeeper configuration.

Modifications

Enable the forceAllowCompaction by default in the BookKeeper configuration conf/bookkeeper.conf

Verifying this change

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(Please pick either of the following options)

This change is a trivial rework / code cleanup without any test coverage.

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This change is already covered by existing tests, such as (please describe tests).

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This change added tests and can be verified as follows:

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• Added integration tests for end-to-end deployment with large payloads (10MB)
• Extended integration test for recovery after broker failure

Does this pull request potentially affect one of the following parts:

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• Dependencies (add or upgrade a dependency)
• The public API
• The schema
• The default values of configurations
• The threading model
• The binary protocol
• The REST endpoints
• The admin CLI options
• The metrics
• Anything that affects deployment

Documentation

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