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From: Ted Yu <yuzhihong@gmail.com>
Date: Tue, 30 Aug 2016 03:23:00 -0700
Message-ID: <CALte62y=LDtnR9g7KJMD4f=rk_i3NBXC=NOdfSG5MGVJOd2jJw@mail.gmail.com>
Subject: Re: Avro schema getting changed dynamically
Cc: "user@hbase.apache.org" <user@hbase.apache.org>
Content-Type: multipart/alternative; boundary=001a1146ff9082fa7e053b475d72
archived-at: Tue, 30 Aug 2016 10:23:12 -0000

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Probably you can poll user@avro for how the new field is handled given old
data.

FYI

On Mon, Aug 29, 2016 at 11:28 PM, Manjeet Singh <manjeet.chandhok@gmail.com>
wrote:

> I want ot add few more points
>
> I am using Java native Api for Hbase get/put
>
> and below is the example
>
> assume i have below schema and I am inserting data by using this schema
> into Hbase but later I have new new values coming and i need to fit this
> into my schema for this I need to create new schema as showing in below
> example
> in example 2 I have new field time stamp
>
> example 1
> { "type" : "record", "name" : "twitter_schema", "namespace" :
> "com.miguno.avro", "fields" : [ { "name" : "username", "type" : "string",
> "doc" : "Name of the user account on Twitter.com" }, { "name" : "tweet",
> "type" : "string", "doc" : "The content of the user's Twitter message" } ]
> }
>
>
> example 2
>
>
> { "type" : "record", "name" : "twitter_schema", "namespace" :
> "com.miguno.avro", "fields" : [ { "name" : "username", "type" : "string",
> "doc" : "Name of the user account on Twitter.com" }, { "name" : "tweet",
> "type" : "string", "doc" : "The content of the user's Twitter message" }, {
> "name" : "timestamp", "type" : "long", "doc" : "Unix epoch time in seconds"
> } ], }
>
>
>
>
> Thanks
> Manjeet
>
>
>
>
>
> On Tue, Aug 30, 2016 at 11:47 AM, Manjeet Singh <
> manjeet.chandhok@gmail.com>
> wrote:
>
> > Hi All,
> >
> > I have use case to put data in avro format in Hbase , I have frequent
> read
> > write operations but its not a problem.
> >
> > Problem is what if my avro schema get changed how shuld I deal with it?
> > This should in mind what about older data which already inserted in Hbase
> > and now we have new schema.
> >
> > can anyone suggest me solution for the same
> >
> > Thanks
> > Manjeet
> >
> > --
> > luv all
> >
>
>
>
> --
> luv all
>

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