[SPARK-45629] Fix `Implicit definition should have explicit type`

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.0.0
• Fix Version/s: 4.0.0
• Component/s: Spark Core, SQL
• Labels: pull-request-available
• Assignee: tangjiafu
• Reporter: Yang Jie
• Created: 23/Oct/23 05:13
• Updated: 01/Dec/23 03:52
• Resolved: 01/Dec/23 03:52

Description

[error] /Users/yangjie01/SourceCode/git/spark-mine-sbt/core/src/main/scala/org/apache/spark/deploy/FaultToleranceTest.scala:343:16: Implicit definition should have explicit type (inferred org.json4s.DefaultFormats.type) [quickfixable]
[error] Applicable -Wconf / @nowarn filters for this fatal warning: msg=<part of the message>, cat=other-implicit-type, site=org.apache.spark.deploy.TestMasterInfo.formats
[error]   implicit val formats = org.json4s.DefaultFormats
[error]   

Issue Links

• links to: GitHub Pull Request #43526