cxzl25 commented on code in PR #4139:
URL: https://github.com/apache/hadoop/pull/4139#discussion_r937786349
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hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java:
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@@ -3403,6 +3399,33 @@ FSPermissionChecker getPermissionChecker()
return dir.getPermissionChecker();
}
+ /**
+ * If blockDeletionAsync enables, blocks will be deleted asynchronously.
+ * If not, incrementally remove the blocks from blockManager
+ * Writelock is dropped and reacquired every BLOCK_DELETION_INCREMENT to
+ * ensure that other waiters on the lock can get in. See HDFS-2938
+ *
+ * @param toDeleteList
+ * a list of blocks that need to be removed from blocksMap
+ */
+ void removeBlocks(List<BlockInfo> toDeleteList) {
+ if (this.blockDeletionAsync) {
Review Comment:
The variable blockDeletionAsync doesn't seem to be declared.
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