hangc0276 commented on code in PR #3721:
URL: https://github.com/apache/bookkeeper/pull/3721#discussion_r1059217690
##########
bookkeeper-server/src/main/java/org/apache/bookkeeper/client/RackawareEnsemblePlacementPolicyImpl.java:
##########
@@ -414,21 +414,52 @@ protected PlacementResult<List<BookieId>>
newEnsembleInternal(
}
return PlacementResult.of(addrs,
PlacementPolicyAdherence.FAIL);
}
-
- for (int i = 0; i < ensembleSize; i++) {
- String curRack;
- if (null == prevNode) {
- if ((null == localNode) ||
defaultRack.equals(localNode.getNetworkLocation())) {
- curRack = NodeBase.ROOT;
+ try {
+ //Choose different rack nodes.
+ String curRack = null;
+ for (int i = 0; i < ensembleSize; i++) {
+ if (null == prevNode) {
+ if ((null == localNode) ||
defaultRack.equals(localNode.getNetworkLocation())) {
+ curRack = NodeBase.ROOT;
+ } else {
+ curRack = localNode.getNetworkLocation();
+ }
} else {
- curRack = localNode.getNetworkLocation();
+ if (!curRack.startsWith("~")) {
+ curRack = "~" + prevNode.getNetworkLocation();
+ } else {
+ curRack = curRack +
NetworkTopologyImpl.NODE_SEPARATOR + prevNode.getNetworkLocation();
+ }
}
- } else {
- curRack = "~" + prevNode.getNetworkLocation();
+ prevNode = selectRandomFromRack(curRack, excludeNodes,
ensemble, ensemble);
Review Comment:
Can we set `fallbackRandom` flag in `selectRandomFromRack` to support random
selection instead of random select in BKNotEnoughBookiesException
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