HBASE-22441 BucketCache NullPointerException in cacheBlock

apache · May 27, 2019 · 5dcfe5f · 5dcfe5f
1 parent 998b841
commit 5dcfe5f
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/BlockCacheUtil.java
@@ -229,6 +229,10 @@ public static int validateBlockAddition(Cacheable existing, Cacheable newBlock,
   public static boolean shouldReplaceExistingCacheBlock(BlockCache blockCache,
       BlockCacheKey cacheKey, Cacheable newBlock) {
     Cacheable existingBlock = blockCache.getBlock(cacheKey, false, false, false);
+    if (null == existingBlock) {
+      // Not exist now.
+      return true;
+    }
     try {
       int comparison = BlockCacheUtil.validateBlockAddition(existingBlock, newBlock, cacheKey);
       if (comparison < 0) {