AlexYinHan commented on code in PR #26202:
URL: https://github.com/apache/flink/pull/26202#discussion_r1979208956
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flink-state-backends/flink-statebackend-forst/src/main/java/org/apache/flink/state/forst/ForStKeyedStateBackendBuilder.java:
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@@ -259,10 +259,14 @@ public ForStKeyedStateBackend<K> build() throws
BackendBuildingException {
defaultColumnFamilyHandle =
restoreResult.getDefaultColumnFamilyHandle();
nativeMetricMonitor = restoreResult.getNativeMetricMonitor();
- // TODO: init materializedSstFiles and lastCompletedCheckpointId
when implement restore
SortedMap<Long,
Collection<IncrementalKeyedStateHandle.HandleAndLocalPath>>
materializedSstFiles = new TreeMap<>();
long lastCompletedCheckpointId = -1L;
+ if (restoreOperation instanceof ForStIncrementalRestoreOperation) {
+ backendUID = restoreResult.getBackendUID();
+ materializedSstFiles = restoreResult.getRestoredSstFiles();
+ lastCompletedCheckpointId =
restoreResult.getLastCompletedCheckpointId();
+ }
Review Comment:
About only supporting the 1st ```FORWARD``` snapshot: Yeah i agree. The
thing is, if we inherit files as I am doing in this PR, we cannot use
```previousSnapshot.isEmpty()``` to determine whether the current snapshot is
the first one. I think we should determine whether at least one snapshot has
been completed using ```notifyCheckpointComplete```. I intended to put this
logic in a separate commit but somehow did not include it. Sorry for the
trouble. I will add this commit and then we can decide whether to keep the same
file inheritance approach as RocksDB.
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