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https://issues.apache.org/jira/browse/HIVE-3868?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13545860#comment-13545860
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binlijin commented on HIVE-3868:
--------------------------------

The reason is:
We use HBase's Bytes to convert long and other data type to byte data and store 
in hbase.
Then use hive to analysis the data in hbase.
                
> Use Hive‘s serde to parse HBase’s byte Data in LazyHBaseRow
> -----------------------------------------------------------
>
>                 Key: HIVE-3868
>                 URL: https://issues.apache.org/jira/browse/HIVE-3868
>             Project: Hive
>          Issue Type: Bug
>          Components: HBase Handler
>    Affects Versions: 0.9.0
>            Reporter: binlijin
>
> In LazyHBaseRow,
> {code}
>   private Object uncheckedGetField(int fieldID) {
>           // it is a column i.e. a column-family with column-qualifier
>           byte [] res = result.getValue(colMap.familyNameBytes, 
> colMap.qualifierNameBytes);
>           if (res == null) {
>             return null;
>           } else {
>             ref = new ByteArrayRef();
>             ref.setData(res);
>           }
>       if (ref != null) {
>         fields[fieldID].init(ref, 0, ref.getData().length);
>       }
>   }
>   For example, if the fields[fieldID] is Bigint, and ref stores HBase byte 
> data (Long), 
>   it will use LazyLong to parse this data and will return NULL value, 
>   it should use Bytes.toLong(res.getData()) to parse this byte data
> {code}

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