[HDDS-3152] Reduce number of chunkwriter threads in integration tests

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.0.0
• Component/s: test
• Labels: pull-request-available
• Target Version/s: 1.0.0
• Assignee: Attila Doroszlai
• Reporter: Attila Doroszlai
• Created: 10/Mar/20 12:55
• Updated: 11/Mar/20 03:51
• Resolved: 11/Mar/20 03:51

Description

Integration tests run multiple datanodes in the same JVM. Each datanode comes with 60 chunk writer threads by default (may be decreased in HDDS-3053). This makes thread dumps (eg. produced by GenericTestUtils.waitFor on timeout) really hard to navigate, as there may be 300+ such threads.

Since integration tests are generally run with a single disk which is even shared among the datanodes, a few threads per datanode should be enough.

Issue Links

• links to: GitHub Pull Request #657