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Date: Mon, 16 Feb 2015 08:27:47 -0800
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 <CALte62wRpoDEvUdS2r1jdYFN_ui=ocqUfbeSnpd6djX9_62zUg@mail.gmail.com>
Subject: Re: Problem Migrating a CustomFilter to Hbase 0.98
From: Ted Yu <yuzhihong@gmail.com>
To: "dev@hbase.apache.org" <dev@hbase.apache.org>
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Mind pastebin'ing relevant potion of your MyCustomFilter ?

Thanks

On Sun, Feb 15, 2015 at 9:37 PM, Grant Pan <gt84646731@gmail.com> wrote:

> I have a a filter, "MyCustomFilter" that is similar to the
> SingleColumnValueFilter in the sense that I have the toByteArray(),
> parseFrom(), and convert() function usage in the same way and also extends
> FilterBase.
>
> The filter was originally for an old version of Hbase that used the write
> and readFields methods. Despite having the same methods and putting console
> output in the parseFrom, toByteArray, and convert functions... running my
> code that sets the specific filter, I can see the toByteArray and convert
> functions being called 9 times based on the logs.
>
> Then I get the following errors:
> java.util.concurrent.TimeoutException
>         at java.util.concurrent.FutureTask.get(FutureTask.java:201)
>         at
> Mon Feb 16 05:12:16 UTC 2015, null, java.net.SocketTimeoutException:
> callTimeout
>
> *Caused by: org.apache.hadoop.hbase.exceptions.DeserializationException:
> parseFrom called on base Filter, but should be called on derived type*
>         at org.apache.hadoop.hbase.filter.Filter.parseFrom(Filter.java:267)
>         ... 12 more
>
>         at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
> Method)
>         at
>
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
>
> I recall that if you see the error in bold, it means your CustomFilter
> class does not have a parseFrom method, which I see that no console output
> has been written at all that is within my parseFrom function. What is the
> problem?
>

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