Thanks for your comments.
I used the _bulk API, so I could insert the date written in Japanese.
I guess that this problem attributed to the Encode of the date.
When I created the date,We saved the data in Shift-JIS format.
this is the problem, maybe.
I created the date in UTF-8 format and using _bulk API.
I inserted the date correctly.
Apache, Apache Lucene, Apache Hadoop, Hadoop, HDFS and the yellow elephant
logo are trademarks of the
Apache Software Foundation
in the United States and/or other countries.