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Posted to user@cassandra.apache.org by "zhaoyf@easemob.com" <zh...@easemob.com> on 2016/09/28 03:12:19 UTC
ask for help about exmples of Data Types the document shows
hi, everyone, I'm learning Cassandra now , and have some problems about the document of "Data Types" . I don't know where to report or ask for help, so I'm very sorry if this mail bother you.
In the chapter The Cassandra Query Language (CQL)/Data Types (http://cassandra.apache.org/doc/latest/cql/types.html), I'm confused with two examples the document showing below. My enviroment is:
CentOS release 6.8 (Final)
java version "1.8.0_91"
Java(TM) SE Runtime Environment (build 1.8.0_91-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.91-b14, mixed mode)
Python 2.7.11
Cassandra version: 3.7
CQL version: [cqlsh 5.0.1 | Cassandra 3.7 | CQL spec 3.4.2 | Native protocol v4]
1、 in http://cassandra.apache.org/doc/latest/cql/types.html, when describing type set, the giving example is:
CREATE TABLE images (
name text PRIMARY KEY,
owner text,
tags set<text> // A set of text values
);
INSERT INTO images (name, owner, tags)
VALUES ('cat.jpg', 'jsmith', { 'pet', 'cute' });
// Replace the existing set entirely
UPDATE images SET tags = { 'kitten', 'cat', 'lol' } WHERE id = 'jsmith';
the update cql statement uses "WHERE id = 'jsmith'" while the table images did not define key "id". I think it's just a slip of the pen.
2、 in http://cassandra.apache.org/doc/latest/cql/types.html, when describing “User-Defined Types”, the giving example is:
CREATE TYPE phone (
country_code int,
number text,
)
CREATE TYPE address (
street text,
city text,
zip int,
phones map<text, phone>
)
CREATE TABLE user (
name text PRIMARY KEY,
addresses map<text, frozen<address>>
)
and when I try to create type address, one error occur:
cqlsh:counterks> CREATE TYPE address (
... street text,
... city text,
... zip int,
... phones map<text, phone>
... );
InvalidRequest: code=2200 [Invalid query] message="Non-frozen UDTs are not allowed inside collections: map<text, phone>"
I change the create statement, like:
CREATE TYPE address (
street text,
city text,
zip int,
phones map<text, frozen<phone>>
);
it works, and the create table user statement works well. Unfortunately, when running the insert statement below, error occur:
INSERT INTO user (name, addresses)
VALUES ('z3 Pr3z1den7', {
'home' : {
street: '1600 Pennsylvania Ave NW',
city: 'Washington',
zip: '20500',
phones: { 'cell' : { country_code: 1, number: '202 456-1111' },
'landline' : { country_code: 1, number: '...' } }
}
'work' : {
street: '1600 Pennsylvania Ave NW',
city: 'Washington',
zip: '20500',
phones: { 'fax' : { country_code: 1, number: '...' } }
}
})
error:
SyntaxException: <ErrorMessage code=2000 [Syntax error in CQL query] message="line 10:14 mismatched input 'work' expecting '}' (...: '...' } } } ['wor]k' :...)">
Is the any suggestion about the problem 2?
Best wishes for everyone, thank you for your watching !
zhaoyf@easemob.com
Re: Re: ask for help about exmples of Data Types the document shows
Posted by "zhaoyf@easemob.com" <zh...@easemob.com>.
hi, Ben, you are right, I copy the statement from document but not check it carefully. It's very helpful and thank a lot !
By the way, is there any way to report to the document author and update the document? I think it may be confused for a green hand just like me.
zhaoyf@easemob.com
From: Ben Slater
Date: 2016-09-28 12:50
To: user
Subject: Re: Re: ask for help about exmples of Data Types the document shows
My best guess it that you need to remove the quotes from around the zip values (ie change if to zip: 20500 rather than zip: ‘20500’ ) as zip is defined as an int.
Cheers
Ben
On Wed, 28 Sep 2016 at 14:38 zhaoyf@easemob.com <zh...@easemob.com> wrote:
Hi, Ben Slater, thank you very much for your replay!
my cassandra version is 3.7, so I think there must be some thing I misunderstand ahout frozen type. I add a comma between } and ‘work’, the result is like below. Is there some special form about " type frozen"?
cqlsh:counterks> INSERT INTO user (name, addresses) VALUES ('z3 Pr3z1den7', {'home' : {street: '1600 Pennsylvania Ave NW',city: 'Washington',zip: '20500',phones: { 'cell' : { country_code: 1, number: '202 456-1111' },'landline' : { country_code: 1, number: '...' } }},'work' : {street: '1600 Pennsylvania Ave NW',city: 'Washington',zip: '20500',phones: { 'fax' : { country_code: 1, number: '...' } }}});
InvalidRequest: code=2200 [Invalid query] message="Invalid map literal for addresses: value {city: 'Washington', zip: '20500', street: '1600 Pennsylvania Ave NW', phones: {'cell': {number: '202 456-1111', country_code: 1}, 'landline': {number: '...', country_code: 1}}} is not of type frozen<address>"
my create statements about table and type are:
cqlsh:counterks> CREATE TYPE phone ( country_code int, number text, );
cqlsh:counterks> CREATE TYPE address ( street text, city text, zip int, phones map<text, frozen<phone>> );
cqlsh:counterks> CREATE TABLE user (
... name text PRIMARY KEY,
... addresses map<text, frozen<address>>
... );
zhaoyf@easemob.com
From: Ben Slater
Date: 2016-09-28 11:29
To: user
Subject: Re: ask for help about exmples of Data Types the document shows
Hi,
I think you are right about the typo in (1). For (2), I think you’re missing a comma between } and ‘work’ so the JSON is invalid.
I think reading this JIRA https://issues.apache.org/jira/browse/CASSANDRA-7423 that the change requiring a UDT as part of a collection to be explicitly marked as frozen is relatively recent (3.6) so the doco may be out date there.
Cheers
Ben
On Wed, 28 Sep 2016 at 13:12 zhaoyf@easemob.com <zh...@easemob.com> wrote:
hi, everyone, I'm learning Cassandra now , and have some problems about the document of "Data Types" . I don't know where to report or ask for help, so I'm very sorry if this mail bother you.
In the chapter The Cassandra Query Language (CQL)/Data Types (http://cassandra.apache.org/doc/latest/cql/types.html), I'm confused with two examples the document showing below. My enviroment is:
CentOS release 6.8 (Final)
java version "1.8.0_91"
Java(TM) SE Runtime Environment (build 1.8.0_91-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.91-b14, mixed mode)
Python 2.7.11
Cassandra version: 3.7
CQL version: [cqlsh 5.0.1 | Cassandra 3.7 | CQL spec 3.4.2 | Native protocol v4]
1、 in http://cassandra.apache.org/doc/latest/cql/types.html, when describing type set, the giving example is:
CREATE TABLE images (
name text PRIMARY KEY,
owner text,
tags set<text> // A set of text values
);
INSERT INTO images (name, owner, tags)
VALUES ('cat.jpg', 'jsmith', { 'pet', 'cute' });
// Replace the existing set entirely
UPDATE images SET tags = { 'kitten', 'cat', 'lol' } WHERE id = 'jsmith';
the update cql statement uses "WHERE id = 'jsmith'" while the table images did not define key "id". I think it's just a slip of the pen.
2、 in http://cassandra.apache.org/doc/latest/cql/types.html, when describing “User-Defined Types”, the giving example is:
CREATE TYPE phone (
country_code int,
number text,
)
CREATE TYPE address (
street text,
city text,
zip int,
phones map<text, phone>
)
CREATE TABLE user (
name text PRIMARY KEY,
addresses map<text, frozen<address>>
)
and when I try to create type address, one error occur:
cqlsh:counterks> CREATE TYPE address (
... street text,
... city text,
... zip int,
... phones map<text, phone>
... );
InvalidRequest: code=2200 [Invalid query] message="Non-frozen UDTs are not allowed inside collections: map<text, phone>"
I change the create statement, like:
CREATE TYPE address (
street text,
city text,
zip int,
phones map<text, frozen<phone>>
);
it works, and the create table user statement works well. Unfortunately, when running the insert statement below, error occur:
INSERT INTO user (name, addresses)
VALUES ('z3 Pr3z1den7', {
'home' : {
street: '1600 Pennsylvania Ave NW',
city: 'Washington',
zip: '20500',
phones: { 'cell' : { country_code: 1, number: '202 456-1111' },
'landline' : { country_code: 1, number: '...' } }
}
'work' : {
street: '1600 Pennsylvania Ave NW',
city: 'Washington',
zip: '20500',
phones: { 'fax' : { country_code: 1, number: '...' } }
}
})
error:
SyntaxException: <ErrorMessage code=2000 [Syntax error in CQL query] message="line 10:14 mismatched input 'work' expecting '}' (...: '...' } } } ['wor]k' :...)">
Is the any suggestion about the problem 2?
Best wishes for everyone, thank you for your watching !
zhaoyf@easemob.com
--
————————
Ben Slater
Chief Product Officer
Instaclustr: Cassandra + Spark - Managed | Consulting | Support
+61 437 929 798
--
————————
Ben Slater
Chief Product Officer
Instaclustr: Cassandra + Spark - Managed | Consulting | Support
+61 437 929 798
Re: Re: ask for help about exmples of Data Types the document shows
Posted by Ben Slater <be...@instaclustr.com>.
My best guess it that you need to remove the quotes from around the zip
values (ie change if to zip: 20500 rather than zip: ‘20500’ ) as zip is
defined as an int.
Cheers
Ben
On Wed, 28 Sep 2016 at 14:38 zhaoyf@easemob.com <zh...@easemob.com> wrote:
> Hi, Ben Slater, thank you very much for your replay!
>
> my cassandra version is 3.7, so I think there must be some thing I
> misunderstand ahout frozen type. I add a comma between } and ‘work’, the
> result is like below. Is there some special form about " type frozen"?
>
>
> cqlsh:counterks> INSERT INTO user (name, addresses) VALUES ('z3 Pr3z1den7', {'home' : {street: '1600 Pennsylvania Ave NW',city: 'Washington',zip: '20500',phones: { 'cell' : { country_code: 1, number: '202 456-1111' },'landline' : { country_code: 1, number: '...' } }},'work' : {street: '1600 Pennsylvania Ave NW',city: 'Washington',zip: '20500',phones: { 'fax' : { country_code: 1, number: '...' } }}});
>
> InvalidRequest: code=2200 [Invalid query] message="Invalid map literal for addresses: value {city: 'Washington', zip: '20500', street: '1600 Pennsylvania Ave NW', phones: {'cell': {number: '202 456-1111', country_code: 1}, 'landline': {number: '...', country_code: 1}}} is not of type frozen<address>"
>
>
> my create statements about table and type are:
>
>
> cqlsh:counterks> CREATE TYPE phone ( country_code int, number text, );
>
> cqlsh:counterks> CREATE TYPE address ( street text, city text, zip int, phones map<text, frozen<phone>> );
> cqlsh:counterks> CREATE TABLE user (
> ... name text PRIMARY KEY,
> ... addresses map<text, frozen<address>>
> ... );
>
>
>
> ------------------------------
> zhaoyf@easemob.com
>
>
> *From:* Ben Slater <be...@instaclustr.com>
> *Date:* 2016-09-28 11:29
> *To:* user <us...@cassandra.apache.org>
> *Subject:* Re: ask for help about exmples of Data Types the document shows
>
> Hi,
>
> I think you are right about the typo in (1). For (2), I think you’re
> missing a comma between } and ‘work’ so the JSON is invalid.
>
> I think reading this JIRA
> https://issues.apache.org/jira/browse/CASSANDRA-7423 that the change
> requiring a UDT as part of a collection to be explicitly marked as frozen
> is relatively recent (3.6) so the doco may be out date there.
>
> Cheers
> Ben
>
> On Wed, 28 Sep 2016 at 13:12 zhaoyf@easemob.com <zh...@easemob.com>
> wrote:
>
>> hi, everyone, I'm learning Cassandra now , and have some problems about
>> the document of "Data Types" . I don't know where to report or ask for
>> help, so I'm very sorry if this mail bother you.
>>
>> In the chapter The Cassandra Query Language (CQL)/Data Types (
>> http://cassandra.apache.org/doc/latest/cql/types.html), I'm confused
>> with two examples the document showing below. My enviroment is:
>>
>> CentOS release 6.8 (Final)
>>
>> java version "1.8.0_91"
>> Java(TM) SE Runtime Environment (build 1.8.0_91-b14)
>> Java HotSpot(TM) 64-Bit Server VM (build 25.91-b14, mixed mode)
>>
>> Python 2.7.11
>>
>> Cassandra version: 3.7
>> CQL version:
>> [cqlsh 5.0.1 | Cassandra 3.7 | CQL spec 3.4.2 | Native protocol v4]
>>
>>
>> 1、 in http://cassandra.apache.org/doc/latest/cql/types.html, when
>> describing type set, the giving example is:
>>
>> CREATE TABLE images (
>> name text PRIMARY KEY,
>> owner text,
>> tags set<text> // A set of text values);INSERT INTO images (name, owner, tags)
>> VALUES ('cat.jpg', 'jsmith', { 'pet', 'cute' });// Replace the existing set entirelyUPDATE images SET tags = { 'kitten', 'cat', 'lol' } WHERE id = 'jsmith';
>>
>> the update cql statement uses "WHERE id = 'jsmith'" while the table
>> images did not define key "id". I think it's just a slip of the pen.
>>
>> 2、 in http://cassandra.apache.org/doc/latest/cql/types.html, when
>> describing “User-Defined Types”, the giving example is:
>> CREATE TYPE phone (
>>
>> country_code int,
>> number text,)CREATE TYPE address (
>> street text,
>> city text,
>> zip int,
>> phones map<text, phone>)CREATE TABLE user (
>> name text PRIMARY KEY,
>> addresses map<text, frozen<address>>)
>>
>> and when I try to create type address, one error occur:
>>
>> cqlsh:counterks> CREATE TYPE address (
>> ... street text,
>> ... city text,
>> ... zip int,
>> ... phones map<text, phone>
>> ... );
>>
>> InvalidRequest: code=2200 [Invalid query] message="Non-frozen UDTs are not allowed inside collections: map<text, phone>"
>>
>> I change the create statement, like:
>>
>> CREATE TYPE address (
>> street text,
>> city text,
>> zip int,
>> phones map<text, frozen<phone>>
>> );
>>
>> it works, and the create table user statement works well. Unfortunately,
>> when running the insert statement below, error occur:
>>
>> INSERT INTO user (name, addresses)
>> VALUES ('z3 Pr3z1den7', {
>> 'home' : {
>> street: '1600 Pennsylvania Ave NW',
>> city: 'Washington',
>> zip: '20500',
>> phones: { 'cell' : { country_code: 1, number: '202 456-1111' },
>> 'landline' : { country_code: 1, number: '...' } }
>> }
>> 'work' : {
>> street: '1600 Pennsylvania Ave NW',
>> city: 'Washington',
>> zip: '20500',
>> phones: { 'fax' : { country_code: 1, number: '...' } }
>> }
>> })
>>
>> error:
>>
>> SyntaxException: <ErrorMessage code=2000 [Syntax error in CQL query] message="line 10:14 mismatched input 'work' expecting '}' (...: '...' } } } ['wor]k' :...)">
>>
>> Is the any suggestion about the problem 2?
>>
>> Best wishes for everyone, thank you for your watching !
>>
>> ------------------------------
>> zhaoyf@easemob.com
>>
> --
> ————————
> Ben Slater
> Chief Product Officer
> Instaclustr: Cassandra + Spark - Managed | Consulting | Support
> +61 437 929 798
>
> --
————————
Ben Slater
Chief Product Officer
Instaclustr: Cassandra + Spark - Managed | Consulting | Support
+61 437 929 798
Re: Re: ask for help about exmples of Data Types the document shows
Posted by "zhaoyf@easemob.com" <zh...@easemob.com>.
Hi, Ben Slater, thank you very much for your replay!
my cassandra version is 3.7, so I think there must be some thing I misunderstand ahout frozen type. I add a comma between } and ‘work’, the result is like below. Is there some special form about " type frozen"?
cqlsh:counterks> INSERT INTO user (name, addresses) VALUES ('z3 Pr3z1den7', {'home' : {street: '1600 Pennsylvania Ave NW',city: 'Washington',zip: '20500',phones: { 'cell' : { country_code: 1, number: '202 456-1111' },'landline' : { country_code: 1, number: '...' } }},'work' : {street: '1600 Pennsylvania Ave NW',city: 'Washington',zip: '20500',phones: { 'fax' : { country_code: 1, number: '...' } }}});
InvalidRequest: code=2200 [Invalid query] message="Invalid map literal for addresses: value {city: 'Washington', zip: '20500', street: '1600 Pennsylvania Ave NW', phones: {'cell': {number: '202 456-1111', country_code: 1}, 'landline': {number: '...', country_code: 1}}} is not of type frozen<address>"
my create statements about table and type are:
cqlsh:counterks> CREATE TYPE phone ( country_code int, number text, );
cqlsh:counterks> CREATE TYPE address ( street text, city text, zip int, phones map<text, frozen<phone>> );
cqlsh:counterks> CREATE TABLE user (
... name text PRIMARY KEY,
... addresses map<text, frozen<address>>
... );
zhaoyf@easemob.com
From: Ben Slater
Date: 2016-09-28 11:29
To: user
Subject: Re: ask for help about exmples of Data Types the document shows
Hi,
I think you are right about the typo in (1). For (2), I think you’re missing a comma between } and ‘work’ so the JSON is invalid.
I think reading this JIRA https://issues.apache.org/jira/browse/CASSANDRA-7423 that the change requiring a UDT as part of a collection to be explicitly marked as frozen is relatively recent (3.6) so the doco may be out date there.
Cheers
Ben
On Wed, 28 Sep 2016 at 13:12 zhaoyf@easemob.com <zh...@easemob.com> wrote:
hi, everyone, I'm learning Cassandra now , and have some problems about the document of "Data Types" . I don't know where to report or ask for help, so I'm very sorry if this mail bother you.
In the chapter The Cassandra Query Language (CQL)/Data Types (http://cassandra.apache.org/doc/latest/cql/types.html), I'm confused with two examples the document showing below. My enviroment is:
CentOS release 6.8 (Final)
java version "1.8.0_91"
Java(TM) SE Runtime Environment (build 1.8.0_91-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.91-b14, mixed mode)
Python 2.7.11
Cassandra version: 3.7
CQL version: [cqlsh 5.0.1 | Cassandra 3.7 | CQL spec 3.4.2 | Native protocol v4]
1、 in http://cassandra.apache.org/doc/latest/cql/types.html, when describing type set, the giving example is:
CREATE TABLE images (
name text PRIMARY KEY,
owner text,
tags set<text> // A set of text values
);
INSERT INTO images (name, owner, tags)
VALUES ('cat.jpg', 'jsmith', { 'pet', 'cute' });
// Replace the existing set entirely
UPDATE images SET tags = { 'kitten', 'cat', 'lol' } WHERE id = 'jsmith';
the update cql statement uses "WHERE id = 'jsmith'" while the table images did not define key "id". I think it's just a slip of the pen.
2、 in http://cassandra.apache.org/doc/latest/cql/types.html, when describing “User-Defined Types”, the giving example is:
CREATE TYPE phone (
country_code int,
number text,
)
CREATE TYPE address (
street text,
city text,
zip int,
phones map<text, phone>
)
CREATE TABLE user (
name text PRIMARY KEY,
addresses map<text, frozen<address>>
)
and when I try to create type address, one error occur:
cqlsh:counterks> CREATE TYPE address (
... street text,
... city text,
... zip int,
... phones map<text, phone>
... );
InvalidRequest: code=2200 [Invalid query] message="Non-frozen UDTs are not allowed inside collections: map<text, phone>"
I change the create statement, like:
CREATE TYPE address (
street text,
city text,
zip int,
phones map<text, frozen<phone>>
);
it works, and the create table user statement works well. Unfortunately, when running the insert statement below, error occur:
INSERT INTO user (name, addresses)
VALUES ('z3 Pr3z1den7', {
'home' : {
street: '1600 Pennsylvania Ave NW',
city: 'Washington',
zip: '20500',
phones: { 'cell' : { country_code: 1, number: '202 456-1111' },
'landline' : { country_code: 1, number: '...' } }
}
'work' : {
street: '1600 Pennsylvania Ave NW',
city: 'Washington',
zip: '20500',
phones: { 'fax' : { country_code: 1, number: '...' } }
}
})
error:
SyntaxException: <ErrorMessage code=2000 [Syntax error in CQL query] message="line 10:14 mismatched input 'work' expecting '}' (...: '...' } } } ['wor]k' :...)">
Is the any suggestion about the problem 2?
Best wishes for everyone, thank you for your watching !
zhaoyf@easemob.com
--
————————
Ben Slater
Chief Product Officer
Instaclustr: Cassandra + Spark - Managed | Consulting | Support
+61 437 929 798
Re: ask for help about exmples of Data Types the document shows
Posted by Ben Slater <be...@instaclustr.com>.
Hi,
I think you are right about the typo in (1). For (2), I think you’re
missing a comma between } and ‘work’ so the JSON is invalid.
I think reading this JIRA
https://issues.apache.org/jira/browse/CASSANDRA-7423 that the change
requiring a UDT as part of a collection to be explicitly marked as frozen
is relatively recent (3.6) so the doco may be out date there.
Cheers
Ben
On Wed, 28 Sep 2016 at 13:12 zhaoyf@easemob.com <zh...@easemob.com> wrote:
> hi, everyone, I'm learning Cassandra now , and have some problems about
> the document of "Data Types" . I don't know where to report or ask for
> help, so I'm very sorry if this mail bother you.
>
> In the chapter The Cassandra Query Language (CQL)/Data Types (
> http://cassandra.apache.org/doc/latest/cql/types.html), I'm confused with
> two examples the document showing below. My enviroment is:
>
> CentOS release 6.8 (Final)
>
> java version "1.8.0_91"
> Java(TM) SE Runtime Environment (build 1.8.0_91-b14)
> Java HotSpot(TM) 64-Bit Server VM (build 25.91-b14, mixed mode)
>
> Python 2.7.11
>
> Cassandra version: 3.7
> CQL version:
> [cqlsh 5.0.1 | Cassandra 3.7 | CQL spec 3.4.2 | Native protocol v4]
>
>
> 1、 in http://cassandra.apache.org/doc/latest/cql/types.html, when
> describing type set, the giving example is:
>
> CREATE TABLE images (
> name text PRIMARY KEY,
> owner text,
> tags set<text> // A set of text values);INSERT INTO images (name, owner, tags)
> VALUES ('cat.jpg', 'jsmith', { 'pet', 'cute' });// Replace the existing set entirelyUPDATE images SET tags = { 'kitten', 'cat', 'lol' } WHERE id = 'jsmith';
>
> the update cql statement uses "WHERE id = 'jsmith'" while the table
> images did not define key "id". I think it's just a slip of the pen.
>
> 2、 in http://cassandra.apache.org/doc/latest/cql/types.html, when
> describing “User-Defined Types”, the giving example is:
> CREATE TYPE phone (
>
> country_code int,
> number text,)CREATE TYPE address (
> street text,
> city text,
> zip int,
> phones map<text, phone>)CREATE TABLE user (
> name text PRIMARY KEY,
> addresses map<text, frozen<address>>)
>
> and when I try to create type address, one error occur:
>
> cqlsh:counterks> CREATE TYPE address (
> ... street text,
> ... city text,
> ... zip int,
> ... phones map<text, phone>
> ... );
>
> InvalidRequest: code=2200 [Invalid query] message="Non-frozen UDTs are not allowed inside collections: map<text, phone>"
>
> I change the create statement, like:
>
> CREATE TYPE address (
> street text,
> city text,
> zip int,
> phones map<text, frozen<phone>>
> );
>
> it works, and the create table user statement works well. Unfortunately,
> when running the insert statement below, error occur:
>
> INSERT INTO user (name, addresses)
> VALUES ('z3 Pr3z1den7', {
> 'home' : {
> street: '1600 Pennsylvania Ave NW',
> city: 'Washington',
> zip: '20500',
> phones: { 'cell' : { country_code: 1, number: '202 456-1111' },
> 'landline' : { country_code: 1, number: '...' } }
> }
> 'work' : {
> street: '1600 Pennsylvania Ave NW',
> city: 'Washington',
> zip: '20500',
> phones: { 'fax' : { country_code: 1, number: '...' } }
> }
> })
>
> error:
>
> SyntaxException: <ErrorMessage code=2000 [Syntax error in CQL query] message="line 10:14 mismatched input 'work' expecting '}' (...: '...' } } } ['wor]k' :...)">
>
> Is the any suggestion about the problem 2?
>
> Best wishes for everyone, thank you for your watching !
>
> ------------------------------
> zhaoyf@easemob.com
>
--
————————
Ben Slater
Chief Product Officer
Instaclustr: Cassandra + Spark - Managed | Consulting | Support
+61 437 929 798