venkata91 commented on a change in pull request #33078:
URL: https://github.com/apache/spark/pull/33078#discussion_r659246152
##########
File path:
common/network-shuffle/src/main/java/org/apache/spark/network/shuffle/RemoteBlockPushResolver.java
##########
@@ -417,24 +476,75 @@ public MergeStatuses
finalizeShuffleMerge(FinalizeShuffleMerge msg) throws IOExc
bitmaps.toArray(new RoaringBitmap[bitmaps.size()]),
Ints.toArray(reduceIds),
Longs.toArray(sizes));
}
- partitions.remove(appShuffleId);
- logger.info("Finalized shuffle {} from Application {}.", msg.shuffleId,
msg.appId);
+ appShuffleInfo.partitions.remove(msg.shuffleId);
+ logger.info("Finalized shuffle {} from Application {}_{}.",
+ msg.shuffleId, msg.appId, msg.attemptId);
return mergeStatuses;
}
@Override
public void registerExecutor(String appId, ExecutorShuffleInfo executorInfo)
{
if (logger.isDebugEnabled()) {
logger.debug("register executor with RemoteBlockPushResolver {}
local-dirs {} "
- + "num sub-dirs {}", appId, Arrays.toString(executorInfo.localDirs),
- executorInfo.subDirsPerLocalDir);
+ + "num sub-dirs {} shuffleManager {}", appId,
Arrays.toString(executorInfo.localDirs),
+ executorInfo.subDirsPerLocalDir, executorInfo.shuffleManager);
+ }
+ String shuffleManagerMeta = executorInfo.shuffleManager;
+ if (shuffleManagerMeta.contains(":")) {
+ String mergeDirInfo =
shuffleManagerMeta.substring(shuffleManagerMeta.indexOf(":") + 1);
+ try {
+ ObjectMapper mapper = new ObjectMapper();
+ MergeDirectoryMeta mergeDirectoryMeta =
+ mapper.readValue(mergeDirInfo, MergeDirectoryMeta.class);
+ if (mergeDirectoryMeta.attemptId == ATTEMPT_ID_UNDEFINED) {
+ // When attemptId is -1, there is no attemptId stored in the
ExecutorShuffleInfo.
+ // Only the first ExecutorRegister message can register the merge
dirs
+ appsShuffleInfo.computeIfAbsent(appId, id ->
+ new AppShuffleInfo(
+ mergeDirectoryMeta.attemptId,
+ new AppPathsInfo(appId, executorInfo.localDirs,
+ mergeDirectoryMeta.mergeDir, executorInfo.subDirsPerLocalDir)
+ ));
+ } else {
+ // If attemptId is not -1, there is attemptId stored in the
ExecutorShuffleInfo.
+ // The first ExecutorRegister message from the same application
attempt wil register
+ // the merge dirs in External Shuffle Service. Any later
ExecutorRegister message
+ // from the same application attempt will not override the merge
dirs. But it can
+ // be overridden by ExecutorRegister message from newer application
attempt,
+ // and former attempts' shuffle partitions information will also be
cleaned up.
+ AtomicReference<AppShuffleInfo> originalAppShuffleInfo = new
AtomicReference<>();
+ appsShuffleInfo.compute(appId, (id, appShuffleInfo) -> {
+ if (appShuffleInfo == null || (appShuffleInfo != null
+ && mergeDirectoryMeta.attemptId > appShuffleInfo.attemptId)) {
+ originalAppShuffleInfo.set(appShuffleInfo);
+ appShuffleInfo =
+ new AppShuffleInfo(
+ mergeDirectoryMeta.attemptId,
+ new AppPathsInfo(appId, executorInfo.localDirs,
+ mergeDirectoryMeta.mergeDir,
executorInfo.subDirsPerLocalDir));
+ }
+ return appShuffleInfo;
+ });
+ if (originalAppShuffleInfo.get() != null) {
+ AppShuffleInfo appShuffleInfo = originalAppShuffleInfo.get();
+ logger.warn("Remove shuffle info for {}_{} as new application
attempt registered",
+ appId, appShuffleInfo.attemptId);
+ cleanupShufflePartitionInfo(appShuffleInfo);
Review comment:
Agree. It's not a frequent occurrence. Since we are anyway deleting this
files in a separate thread in an async manner, it would be better to do the
same for closing the files as well as it is in the critical path.
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