pvary commented on code in PR #9173:
URL: https://github.com/apache/iceberg/pull/9173#discussion_r1413759640
##########
flink/v1.17/flink/src/main/java/org/apache/iceberg/flink/source/IcebergSource.java:
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@@ -197,17 +203,21 @@ private SplitEnumerator<IcebergSourceSplit,
IcebergEnumeratorState> createEnumer
LOG.info(
"Iceberg source restored {} splits from state for table {}",
enumState.pendingSplits().size(),
- lazyTable().name());
+ tableName());
assigner = assignerFactory.createAssigner(enumState.pendingSplits());
}
+ // Create a copy of the table loader to avoid lifecycle management
conflicts with the user
+ // provided table loader. This copy is only required for split planning,
which uses the
+ // underlying io, and should be closed after split planning is complete
Review Comment:
I usually prefer if the objects own the whole lifecycle of the child objects.
So ideally:
- `new ContinuousSplitPlannerImpl` should clone the loader itself, and keep
it as long as it needs, and closes it at the end of the reading
- `planSplitsForBatch` should clone the loader itself, and keep it as long
as it needs, and closes it at the end of the reading
- For `tableName`, I am a bit confused. In `planSplitsForBatch` we need to
clone the loader to do the planning, but use the old loader to get the
`tableName` for logging? Why not set the `tableName` value in the constructor,
and forget the whole `lazyTable` thing?
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