[iotdb] 01/01: [IOTDB-2526] Fix NPE when setting meta_data_cache_enable=false

[ja...@apache.org]

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jackietien pushed a commit to branch IOTDB-2526
in repository https://gitbox.apache.org/repos/asf/iotdb.git

commit 8c9f43bb591ff9208a903d2576fa6c6cf96398a3
Author: JackieTien97 <ja...@gmail.com>
AuthorDate: Thu Feb 10 16:13:04 2022 +0800

    [IOTDB-2526] Fix NPE when setting meta_data_cache_enable=false
---
 .../org/apache/iotdb/db/engine/cache/TimeSeriesMetadataCache.java     | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/server/src/main/java/org/apache/iotdb/db/engine/cache/TimeSeriesMetadataCache.java b/server/src/main/java/org/apache/iotdb/db/engine/cache/TimeSeriesMetadataCache.java
index 63d2f56..7b4a51c 100644
--- a/server/src/main/java/org/apache/iotdb/db/engine/cache/TimeSeriesMetadataCache.java
+++ b/server/src/main/java/org/apache/iotdb/db/engine/cache/TimeSeriesMetadataCache.java
@@ -157,7 +157,9 @@ public class TimeSeriesMetadataCache {
       }
       TimeseriesMetadata timeseriesMetadata =
           reader.readTimeseriesMetadata(new Path(key.device, key.measurement), false);
-      return timeseriesMetadata.getStatistics().getCount() == 0 ? null : timeseriesMetadata;
+      return (timeseriesMetadata == null || timeseriesMetadata.getStatistics().getCount() == 0)
+          ? null
+          : timeseriesMetadata;
     }
 
     TimeseriesMetadata timeseriesMetadata = lruCache.getIfPresent(key);