How to send whole result of the Cassandra query to the socket with netcat
I wanted to send data to the socket that my Flink program can read it from socket.
As this guidance https://stackoverflow.com/a/53943644/6640504 I did that with:
cqlsh -e “select * from tableName;” -k mykeyspace Ipaddress 9042 |
nc -lk portNumber
and my Flink program read data from socket without any errors.
Now I have a new issue which is Cassandra send data to the socket page by page and the Flink program just receive one page. I don’t know how to send another page automatically.
I disabled “paging” in Cassandra with “paging off”; but It showed me this error:
ReadFailure: Error from server: code=1300 [Replica(s) failed to
execute read] message="Operation failed - received 0 responses and 1
failures" info={'failures': 1, 'received_responses': 0, >'required_responses': 1, 'consistency': 'ONE'}
Would you please help me how I can send the whole result of this query “select * from tableName;” to the socket for the Flink program to use it?
java sockets apache-flink cassandra-3.0 netcat
edited Dec 29 '18 at 6:27
NarendraR
3,83161743
asked Dec 29 '18 at 5:49
M_GhM_Gh
4110
add a comment |
I wanted to send data to the socket that my Flink program can read it from socket.
As this guidance https://stackoverflow.com/a/53943644/6640504 I did that with:
cqlsh -e “select * from tableName;” -k mykeyspace Ipaddress 9042 |
nc -lk portNumber
and my Flink program read data from socket without any errors.
Now I have a new issue which is Cassandra send data to the socket page by page and the Flink program just receive one page. I don’t know how to send another page automatically.
I disabled “paging” in Cassandra with “paging off”; but It showed me this error:
ReadFailure: Error from server: code=1300 [Replica(s) failed to
execute read] message="Operation failed - received 0 responses and 1
failures" info={'failures': 1, 'received_responses': 0, >'required_responses': 1, 'consistency': 'ONE'}
Would you please help me how I can send the whole result of this query “select * from tableName;” to the socket for the Flink program to use it?
java sockets apache-flink cassandra-3.0 netcat
edited Dec 29 '18 at 6:27
NarendraR
3,83161743
asked Dec 29 '18 at 5:49
M_GhM_Gh
4110
Check your Cassandra logs. Refer stackoverflow.com/questions/37114455/reading-error-in-cassandra
– shriyog
Dec 29 '18 at 6:37
I checked the log, it said "some operation time out".
– M_Gh
Dec 29 '18 at 9:35
How exactly did you go about trying "paging off" ?
– David Anderson
Dec 29 '18 at 10:59
I tested two ways, first, in cqlsh shell I wrote "paging off";but I recognized that the "paging off" did not affect the whole Cassandra. So, I wrote this command: "cqlsh -e “select * from tableName;” -k mykeyspace Ipaddress 9042 paging off | nc -lk portNumber" and it did not do any thing special.
– M_Gh
Dec 29 '18 at 11:29
add a comment |
I wanted to send data to the socket that my Flink program can read it from socket.
As this guidance https://stackoverflow.com/a/53943644/6640504 I did that with:
cqlsh -e “select * from tableName;” -k mykeyspace Ipaddress 9042 |
nc -lk portNumber
and my Flink program read data from socket without any errors.
Now I have a new issue which is Cassandra send data to the socket page by page and the Flink program just receive one page. I don’t know how to send another page automatically.
I disabled “paging” in Cassandra with “paging off”; but It showed me this error:
ReadFailure: Error from server: code=1300 [Replica(s) failed to
execute read] message="Operation failed - received 0 responses and 1
failures" info={'failures': 1, 'received_responses': 0, >'required_responses': 1, 'consistency': 'ONE'}
Would you please help me how I can send the whole result of this query “select * from tableName;” to the socket for the Flink program to use it?
java sockets apache-flink cassandra-3.0 netcat
edited Dec 29 '18 at 6:27
NarendraR
3,83161743
asked Dec 29 '18 at 5:49
M_GhM_Gh
4110
I wanted to send data to the socket that my Flink program can read it from socket.
As this guidance https://stackoverflow.com/a/53943644/6640504 I did that with:
cqlsh -e “select * from tableName;” -k mykeyspace Ipaddress 9042 |
nc -lk portNumber
and my Flink program read data from socket without any errors.
Now I have a new issue which is Cassandra send data to the socket page by page and the Flink program just receive one page. I don’t know how to send another page automatically.
I disabled “paging” in Cassandra with “paging off”; but It showed me this error:
ReadFailure: Error from server: code=1300 [Replica(s) failed to
execute read] message="Operation failed - received 0 responses and 1
failures" info={'failures': 1, 'received_responses': 0, >'required_responses': 1, 'consistency': 'ONE'}
Would you please help me how I can send the whole result of this query “select * from tableName;” to the socket for the Flink program to use it?
java sockets apache-flink cassandra-3.0 netcat
java sockets apache-flink cassandra-3.0 netcat
edited Dec 29 '18 at 6:27
NarendraR
3,83161743
asked Dec 29 '18 at 5:49
M_GhM_Gh
4110
edited Dec 29 '18 at 6:27
NarendraR
3,83161743
asked Dec 29 '18 at 5:49
M_GhM_Gh
4110
edited Dec 29 '18 at 6:27
NarendraR
3,83161743
edited Dec 29 '18 at 6:27
NarendraR
3,83161743
edited Dec 29 '18 at 6:27
NarendraR
3,83161743
3,83161743
asked Dec 29 '18 at 5:49
M_GhM_Gh
4110
asked Dec 29 '18 at 5:49
M_GhM_Gh
4110
asked Dec 29 '18 at 5:49
M_GhM_Gh
4110
4110
Check your Cassandra logs. Refer stackoverflow.com/questions/37114455/reading-error-in-cassandra
– shriyog
Dec 29 '18 at 6:37
I checked the log, it said "some operation time out".
– M_Gh
Dec 29 '18 at 9:35
How exactly did you go about trying "paging off" ?
– David Anderson
Dec 29 '18 at 10:59
I tested two ways, first, in cqlsh shell I wrote "paging off";but I recognized that the "paging off" did not affect the whole Cassandra. So, I wrote this command: "cqlsh -e “select * from tableName;” -k mykeyspace Ipaddress 9042 paging off | nc -lk portNumber" and it did not do any thing special.
– M_Gh
Dec 29 '18 at 11:29
add a comment |
Check your Cassandra logs. Refer stackoverflow.com/questions/37114455/reading-error-in-cassandra
– shriyog
Dec 29 '18 at 6:37
I checked the log, it said "some operation time out".
– M_Gh
Dec 29 '18 at 9:35
How exactly did you go about trying "paging off" ?
– David Anderson
Dec 29 '18 at 10:59
I tested two ways, first, in cqlsh shell I wrote "paging off";but I recognized that the "paging off" did not affect the whole Cassandra. So, I wrote this command: "cqlsh -e “select * from tableName;” -k mykeyspace Ipaddress 9042 paging off | nc -lk portNumber" and it did not do any thing special.
– M_Gh
Dec 29 '18 at 11:29
Check your Cassandra logs. Refer stackoverflow.com/questions/37114455/reading-error-in-cassandra
– shriyog
Dec 29 '18 at 6:37
Check your Cassandra logs. Refer stackoverflow.com/questions/37114455/reading-error-in-cassandra
– shriyog
Dec 29 '18 at 6:37
I checked the log, it said "some operation time out".
– M_Gh
Dec 29 '18 at 9:35
I checked the log, it said "some operation time out".
– M_Gh
Dec 29 '18 at 9:35
How exactly did you go about trying "paging off" ?
– David Anderson
Dec 29 '18 at 10:59
How exactly did you go about trying "paging off" ?
– David Anderson
Dec 29 '18 at 10:59
I tested two ways, first, in cqlsh shell I wrote "paging off";but I recognized that the "paging off" did not affect the whole Cassandra. So, I wrote this command: "cqlsh -e “select * from tableName;” -k mykeyspace Ipaddress 9042 paging off | nc -lk portNumber" and it did not do any thing special.
– M_Gh
Dec 29 '18 at 11:29
I tested two ways, first, in cqlsh shell I wrote "paging off";but I recognized that the "paging off" did not affect the whole Cassandra. So, I wrote this command: "cqlsh -e “select * from tableName;” -k mykeyspace Ipaddress 9042 paging off | nc -lk portNumber" and it did not do any thing special.
– M_Gh
Dec 29 '18 at 11:29
add a comment |
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Check your Cassandra logs. Refer stackoverflow.com/questions/37114455/reading-error-in-cassandra
– shriyog
Dec 29 '18 at 6:37
I checked the log, it said "some operation time out".
– M_Gh
Dec 29 '18 at 9:35
How exactly did you go about trying "paging off" ?
– David Anderson
Dec 29 '18 at 10:59
I tested two ways, first, in cqlsh shell I wrote "paging off";but I recognized that the "paging off" did not affect the whole Cassandra. So, I wrote this command: "cqlsh -e “select * from tableName;” -k mykeyspace Ipaddress 9042 paging off | nc -lk portNumber" and it did not do any thing special.
– M_Gh
Dec 29 '18 at 11:29