JanusGraph / JanusGraph/janusgraph

Flaky CQL Index test: testRepairGraphIndex

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storage/cassandra testing/flaky
Dominant language
Java
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Description

## Flaky Test

* **Test Name:** `CQLIndexManagementIT.testRepairGraphIndex`
* **Link:** https://github.com/JanusGraph/janusgraph/blob/0819d42c6c6b4af936e96f05728ad1b8b3f91864/janusgraph-hadoop/src/test/java/org/janusgraph/hadoop/AbstractIndexManagementIT.java#L127
* **Branch:** master
* **Notes:**

### Stack Trace

```java
Error: org.janusgraph.hadoop.CQLIndexManagementIT.testRepairGraphIndex Time elapsed: 65.125 s <<< FAILURE!
org.opentest4j.AssertionFailedError: expected: but was:
at org.janusgraph.hadoop.AbstractIndexManagementIT.testRepairGraphIndex(AbstractIndexManagementIT.java:142)
at java.lang.reflect.Method.invoke(Method.java:498)
at java.util.ArrayList.forEach(ArrayList.java:1259)
at java.util.ArrayList.forEach(ArrayList.java:1259)
```

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Read AbstractIndexManagementIT.java around testRepairGraphIndex, especially the assertion at line 142, and run CQLIndexManagementIT.testRepairGraphIndex on master to reproduce the failure. Trace why the assertion can return false and verify the test reliably passes in the relevant integration-test run.

Written by the indexing model from the issue text.

Assessment

Tech stack
cassandra, java
Domain
databases, testing
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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