kowshik commented on a change in pull request #10478:
URL: https://github.com/apache/kafka/pull/10478#discussion_r611454958



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File path: core/src/main/scala/kafka/log/Log.scala
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@@ -255,19 +261,21 @@ case object SnapshotGenerated extends 
LogStartOffsetIncrementReason {
 @threadsafe
 class Log(@volatile private var _dir: File,
           @volatile var config: LogConfig,
+          val segments: LogSegments,

Review comment:
       I see your point. It's good thinking. But the main reason I didn't take 
this route was that some of the fields of `LogComponents` are immutable within 
the context of the `LogLoader`, but are mutable by `Log`. Examples: 
`logStartOffset`, `recoveryPoint` and `leaderEpochCache ` are defined as `var` 
only in `Log`. It seemed hard to explain if we made it a `var` inside 
`LogComponents` just because the `Log` class wants to mutate them in the future.




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