From 268de45aa521635a377950d7752d8f13316e4cad Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Sun, 29 Aug 2021 20:27:11 -0700
Subject: [PATCH] reset volume id cache if not found

---
 .../client/src/main/java/seaweedfs/client/SeaweedRead.java | 5 +++--
 .../src/main/java/seaweedfs/client/VolumeIdCache.java      | 7 +++++++
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/other/java/client/src/main/java/seaweedfs/client/SeaweedRead.java b/other/java/client/src/main/java/seaweedfs/client/SeaweedRead.java
index 384636601..011462a17 100644
--- a/other/java/client/src/main/java/seaweedfs/client/SeaweedRead.java
+++ b/other/java/client/src/main/java/seaweedfs/client/SeaweedRead.java
@@ -64,10 +64,11 @@ public class SeaweedRead {
                 startOffset += gap;
             }
 
-            FilerProto.Locations locations = knownLocations.get(parseVolumeId(chunkView.fileId));
+            String volumeId = parseVolumeId(chunkView.fileId);
+            FilerProto.Locations locations = knownLocations.get(volumeId);
             if (locations == null || locations.getLocationsCount() == 0) {
                 LOG.error("failed to locate {}", chunkView.fileId);
-                // log here!
+                volumeIdCache.clearLocations(volumeId);
                 return 0;
             }
 
diff --git a/other/java/client/src/main/java/seaweedfs/client/VolumeIdCache.java b/other/java/client/src/main/java/seaweedfs/client/VolumeIdCache.java
index fd2649cc2..86263fff9 100644
--- a/other/java/client/src/main/java/seaweedfs/client/VolumeIdCache.java
+++ b/other/java/client/src/main/java/seaweedfs/client/VolumeIdCache.java
@@ -26,6 +26,13 @@ public class VolumeIdCache {
         return this.cache.getIfPresent(volumeId);
     }
 
+    public void clearLocations(String volumeId) {
+        if (this.cache == null) {
+            return;
+        }
+        this.cache.invalidate(volumeId);
+    }
+
     public void setLocations(String volumeId, FilerProto.Locations locations) {
         if (this.cache == null) {
             return;