milleruntime commented on code in PR #2792:
URL: https://github.com/apache/accumulo/pull/2792#discussion_r909832662
##########
server/gc/src/main/java/org/apache/accumulo/gc/GCRun.java:
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@@ -457,4 +459,28 @@ public long getErrorsStat() {
public long getCandidatesStat() {
return candidates;
}
+
+ @Override
+ public boolean isRootTable() {
+ return level == DataLevel.ROOT;
+ }
+
+ @Override
+ public boolean isMetadataTable() {
+ return level == DataLevel.METADATA;
+ }
+
+ @Override
+ public Set<TableId> getCandidateTableIDs() {
+ if (isRootTable()) {
+ return Collections.singleton(MetadataTable.ID);
+ } else if (isMetadataTable()) {
+ Set<TableId> tableIds = new HashSet<>(getTableIDs());
Review Comment:
This is OK but just calling `getTableIDs()` is probably not enough on a
highly active cluster. This just calls the API and gets whatever is cached at
the time.
@ctubbsii comment from the original PR: "It can't detect tables that existed
at the start but skipped, if the ZooCache wasn't up-to-date, and it can't
detect skipping over any tables that were created or deleted during the scan.
This is especially problematic if a new table was created as the result of a
clone operation, which will duplicate all the file references for the new
table."
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