From 5543882f488f12087211b1bf88e2284508d691a7 Mon Sep 17 00:00:00 2001
From: Shen Liu <liushen001@126.com>
Date: Mon, 28 Nov 2022 15:53:32 +0800
Subject: [PATCH] [fix][offload] Fix numerical overflow bug while reading data
 from tiered storage (#18595)

Co-authored-by: druidliu <druidliu@tencent.com>
(cherry picked from commit 5c34e846561efc26ba7fc8b64383fefad4f1072a)
---
 .../offload/jcloud/impl/BlobStoreBackedInputStreamImpl.java    | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tiered-storage/jcloud/src/main/java/org/apache/bookkeeper/mledger/offload/jcloud/impl/BlobStoreBackedInputStreamImpl.java b/tiered-storage/jcloud/src/main/java/org/apache/bookkeeper/mledger/offload/jcloud/impl/BlobStoreBackedInputStreamImpl.java
index e3fc68ab7e218..c5fda387c73f6 100644
--- a/tiered-storage/jcloud/src/main/java/org/apache/bookkeeper/mledger/offload/jcloud/impl/BlobStoreBackedInputStreamImpl.java
+++ b/tiered-storage/jcloud/src/main/java/org/apache/bookkeeper/mledger/offload/jcloud/impl/BlobStoreBackedInputStreamImpl.java
@@ -144,6 +144,7 @@ public void close() {
 
     @Override
     public int available() throws IOException {
-        return (int)(objectLen - cursor) + buffer.readableBytes();
+        long available = objectLen - cursor + buffer.readableBytes();
+        return available > Integer.MAX_VALUE ? Integer.MAX_VALUE : (int) available;
     }
 }