Github user takuti commented on the issue:
https://github.com/apache/incubator-hivemall/pull/82
@helenahm Good catch, and thank you for reporting. You are right; this bug
is definitely caused by the encoding-related issue. I'll take care of fixing
the bug.
Basically, the critical reason is in:
```java
buf.putInt(wc.length());
buf.put(wc.getBytes());
```
These lines are totally wrong and need be fixed to:
```java
buf.putInt(wc.getBytes().length);
buf.put(wc.getBytes());
```
At the same time, as @myui mentioned above, using `bytes` things should be
avoided.
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