xccui opened a new issue, #5871:
URL: https://github.com/apache/hudi/issues/5871

   **Describe the problem you faced**
   
   Got NPE when using Flink to write metadata table with column stats and bloom 
filter enabled.
   
   **To Reproduce**
   
   ```
   setBoolean(FlinkOptions.METADATA_ENABLED, true)
   setBoolean(HoodieMetadataConfig.ENABLE_METADATA_INDEX_COLUMN_STATS.key(), 
true)
   setBoolean(HoodieMetadataConfig.ENABLE_METADATA_INDEX_BLOOM_FILTER.key(), 
true)
   ```
   
   **Environment Description**
   
   * Hudi version : 0.12.0-SNAPSHOT on master
   
   * Flink version : 1.14
   
   * Storage (HDFS/S3/GCS..) : S3
   
   * Running on Docker? (yes/no) : no
   
   
   **Additional context**
   
   Some values are `null` in the table.
   
   **Stacktrace**
   
   ```
   Caused by: java.lang.NullPointerException
        at 
org.apache.hudi.avro.HoodieAvroUtils.convertValueForAvroLogicalTypes(HoodieAvroUtils.java:654)
        at 
org.apache.hudi.avro.HoodieAvroUtils.convertValueForSpecificDataTypes(HoodieAvroUtils.java:630)
        at 
org.apache.hudi.metadata.HoodieTableMetadataUtil.lambda$null$1(HoodieTableMetadataUtil.java:147)
        at java.util.ArrayList.forEach(ArrayList.java:1259)
        at 
org.apache.hudi.metadata.HoodieTableMetadataUtil.lambda$collectColumnRangeMetadata$2(HoodieTableMetadataUtil.java:142)
        at java.util.ArrayList.forEach(ArrayList.java:1259)
        at 
org.apache.hudi.metadata.HoodieTableMetadataUtil.collectColumnRangeMetadata(HoodieTableMetadataUtil.java:139)
        at 
org.apache.hudi.io.HoodieAppendHandle.processAppendResult(HoodieAppendHandle.java:363)
        at 
org.apache.hudi.io.HoodieAppendHandle.appendDataAndDeleteBlocks(HoodieAppendHandle.java:405)
   ```
   
   


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