CN104679888A - Device and method for data synchronization - Google Patents
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Abstract
The invention provides a device and a method for data synchronization. The device comprises a data source, a sqoop and an MQ (Message Queue), wherein the data source is connected with the sqoop, the sqoop is connected with the MQ, and the MQ is connected with at least one target database; the sqoop is used for obtaining to-be-synchronized data with preset labels in the data source, carrying out synchronization processing on the to-be-synchronized data and sending the processed data to the MQ; the MQ is used for receiving subscription on labels for labeling data in the target database and sending the data sent by the sqoop to the target database subscribing the preset labels according to the preset labels. According to the device and the method for the data synchronization, provided by the invention, the data synchronization efficiency can be increased.
Description
Technical field
The present invention relates to technical field of data processing, particularly a kind of device and method of data syn-chronization.
Background technology
Sqoop is the instrument that data shift mutually, the data in a relevant database can be led and enter in the HDFS of Hadoop, also the data of HDFS can be led entering in relevant database.
For in large data platform, utilize sqoop for carrying out in data synchronization process between relevant database and non-relational database, when the data in source database need to be synchronized to respectively in multiple target database, need sqoop to be connected separately from different target database respectively, realize data syn-chronization.For example, when the data in source database need to be synchronized to respectively in two target databases, source database is connected with sqoop, again sqoop is connected with first aim database, then, the data in source database is synchronized in first aim database by sqoop, after synchronously completing, sqoop and first aim database are disconnected, then sqoop is connected with second target database, the data in source database are synchronized in second target database by sqoop.
Visible by foregoing description, in prior art, when the data in data source being synchronized in multiple target database by sqoop, the efficiency of data syn-chronization is lower.
Summary of the invention
In view of this, the invention provides a kind of device and method of data syn-chronization, the efficiency of data syn-chronization can be improved.
On the one hand, the invention provides a kind of device of data syn-chronization, comprising:
Data source is connected with sqoop, and described sqoop is connected with message queue MQ, and described MQ is connected with at least one target database;
Described sqoop, for obtaining the data to be synchronized with default label in described data source, and synchronously processes described data to be synchronized, and the data after process are sent to described MQ;
Described MQ, for accepting the subscription of described target database to the label for identification data, according to described default label, by the data that described sqoop sends, sends to the target database of the described default label of described subscription.
Further, described MQ, also for receiving the failed message of the reception data failure that described target database is sent, and when receiving described failed message in the first Preset Time after the data sent at the described sqoop of transmission, send data corresponding to described failed message to the target database that described failed message is corresponding.
Further, described sqoop, also for obtaining the database synchronization daily record of described data source, gives described MQ by described database synchronization Log Sender;
Described MQ, for giving described target database by described database synchronization Log Sender, and preserves the second Preset Time by described database synchronization daily record.
Further, described MQ, for receiving the information of the label of the subscription that at least one target database described is sent, according to the information of the label of described subscription, set up the corresponding relation of label and target database, according to described default label, by the data that described sqoop sends, send to the target database that described default label is corresponding.
Further, described MQ, data for being sent by described sqoop are carried out Data Segmentation and are obtained the subdata after splitting, the each subdata obtained is carried out data encapsulation, subdata after encapsulation is written in the queue of MQ, read described queue, the data in the queue of reading are carried out encapsulating dress and obtains packet, give described target database by described Packet Generation.
On the other hand, the invention provides a kind of method of data syn-chronization, comprising:
S1:sqoop obtains the data to be synchronized with default label in described data source, and synchronously processes described data to be synchronized, and the data after process are sent to message queue MQ;
S2: described MQ accepts the subscription of described target database to the label for identification data, according to described default label, by the data that described sqoop sends, sends to the target database of the described default label of described subscription.
Further, also comprise:
Described MQ receives the failed message of the reception data failure that described target database is sent, and when receiving described failed message in the first Preset Time after the data sent at the described sqoop of transmission, send data corresponding to described failed message to the target database that described failed message is corresponding.
Further, also comprise:
Described sqoop obtains the database synchronization daily record of described data source, gives described MQ by described database synchronization Log Sender;
Described database synchronization Log Sender is given described target database by described MQ, and the second Preset Time is preserved in described database synchronization daily record.
Further, also comprised before described step S1:
Described MQ receives the information of the label of the subscription that at least one target database described is sent;
Described MQ, according to the information of the label of described subscription, sets up the corresponding relation of described label and target database;
Described S2, comprising:
Described MQ, according to described default label, by the data that described sqoop sends, sends to the target database that described default label is corresponding.
Further, described S2 comprises:
The data that described sqoop sends by described MQ are carried out Data Segmentation and are obtained the subdata after splitting, the each subdata obtained is carried out data encapsulation, subdata after encapsulation is written in the queue of MQ, read described queue, data in the queue of reading are carried out encapsulating dress and obtains packet, give described target database by described Packet Generation.
The invention provides a kind of device and method of data syn-chronization, sqoop and MQ is connected, MQ can be connected with multiple target database, target database can subscribe to label on MQ, the target database of all this labels of subscription will be sent to when MQ receives the data with this label, so just achieve and the data in data source are synchronized in multiple target database simultaneously, improve the efficiency of data syn-chronization.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of the device of a kind of data syn-chronization that one embodiment of the invention provides;
Fig. 2 is the process flow diagram of the method for a kind of data syn-chronization that one embodiment of the invention provides;
Fig. 3 is the process flow diagram of the method for the another kind of data syn-chronization that one embodiment of the invention provides.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly; below in conjunction with the accompanying drawing in the embodiment of the present invention; technical scheme in the embodiment of the present invention is clearly and completely described; obviously; described embodiment is the present invention's part embodiment, instead of whole embodiments, based on the embodiment in the present invention; the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to the scope of protection of the invention.
As shown in Figure 1, embodiments provide a kind of device of data syn-chronization, this device comprises:
Data source is connected with sqoop101, and described sqoop101 and MQ (Message Queue, message queue) 102 is connected, and described MQ102 is connected with at least one target database;
Described sqoop101, for obtaining the data to be synchronized with default label in described data source, and synchronously processes described data to be synchronized, and the data after process are sent to described MQ102;
Described MQ102, for accepting the subscription of described target database to the label for identification data, according to described default label, by the data that described sqoop101 sends, sends to the target database of the described default label of described subscription.
Embodiments provide a kind of device of data syn-chronization, sqoop and MQ is connected, MQ can be connected with multiple target database, target database can subscribe to label on MQ, the target database of all this labels of subscription will be sent to when MQ receives the data with this label, so just achieve and the data in data source are synchronized in multiple target database simultaneously, improve the efficiency of data syn-chronization.
In addition, the device of a kind of data syn-chronization provided by the embodiment of the present invention, subscribes to label by target database to MQ, and the data source of data syn-chronization and target database are carried out effective decoupling zero, dynamic expansion data syn-chronization demand.
The data syn-chronization caused because of reasons such as networks is interrupted, carry out data re-transmitting process, data re-transmitting can be carried out by MQ, improve fault-tolerant processing, when MQ linking objective database, during for consumption data failure, MQ can for automatically not retransmitted by the data of consuming, until consume successfully, effective guarantee data finally can realize successful synchronization, and whole retry procedure processes automatically by MQ, without the need to manual control, robotization efficiency and the reliability of data syn-chronization can be improved further.
This device comprises: described MQ, also for receiving the failed message of the reception data failure that described target database is sent, and when receiving described failed message in the first Preset Time after the data sent at the described sqoop of transmission, send data corresponding to described failed message to the target database that described failed message is corresponding.In addition, when receiving described failed message in the first Preset Time after the data do not sent at the described sqoop of transmission, this failed message is ignored.
For example, after data A is sent to target database by MQ, target database takes defeat, and have sent failed message to MQ, have received this failed message, send data A to target database in first Preset Time of MQ after sending data A.
In a kind of possible implementation, this device comprises:
Described sqoop, also for obtaining the database synchronization daily record of described data source, gives described MQ by described database synchronization Log Sender;
Described MQ, for giving described target database by described database synchronization Log Sender, and preserves the second Preset Time by described database synchronization daily record.
When carrying out data syn-chronization by sqoop, the database synchronization daily record transmitted for sqoop carries out effective persistence preservation by MQ, facilitates data traceability.In a distributed system, message is from being sent to reception, and link is very many, be safe, and any link is out of joint, all can cause losing message without any a link.Realizing message duration by MQ, ensureing, not being in the too many levels be perfectly safe, to complete the transmission of message safety.Sqoop sends data to MQ, is realized the persistence in a period of time by MQ, and can be acquiescence reservation 48 hours, namely the second Preset Time be 48 hours, is conducive to the backtracking realizing synchrodata, improves the fault-tolerant ability of data syn-chronization.
Subscription MQ being carried out to label can be realized by following implementation, described MQ, for receiving the information of the label of the subscription that at least one target database described is sent, according to the information of the label of described subscription, set up the corresponding relation of label and target database, according to described default label, by the data that described sqoop sends, send to the target database that described default label is corresponding.
In a kind of possible implementation, described MQ, data for being sent by described sqoop are carried out Data Segmentation and are obtained the subdata after splitting, the each subdata obtained is carried out data encapsulation, subdata after encapsulation is written in the queue of MQ, read described queue, the data in the queue of reading are carried out encapsulating dress and obtains packet, give described target database by described Packet Generation.
The content such as information interaction, implementation between each unit in said apparatus, due to the inventive method embodiment based on same design, particular content can see in the inventive method embodiment describe, repeat no more herein.
See Fig. 2, embodiments provide a kind of method of data syn-chronization, the method comprises:
S1:sqoop obtains the data to be synchronized with default label in described data source, and synchronously processes described data to be synchronized, and the data after process are sent to MQ;
S2: described MQ accepts the subscription of described target database to the label for identification data, according to described default label, by the data that described sqoop sends, sends to the target database of the described default label of described subscription.
Embodiments provide a kind of method of data syn-chronization, sqoop and MQ is connected, MQ can be connected with multiple target database, target database can subscribe to label on MQ, the target database of all this labels of subscription will be sent to when MQ receives the data with this label, so just achieve and the data in data source are synchronized in multiple target database simultaneously, improve the efficiency of data syn-chronization.
In a kind of possible implementation, the method also comprises:
Described MQ receives the failed message of the reception data failure that described target database is sent, and when receiving described failed message in the first Preset Time after the data sent at the described sqoop of transmission, send data corresponding to described failed message to the target database that described failed message is corresponding.
By this implementation, when target database receives data failure, MQ can carry out data re-transmitting, improve fault-tolerant processing, effective guarantee data finally can realize successful synchronization, and whole retry procedure processes automatically by MQ, without the need to manual control, robotization efficiency and the reliability of data syn-chronization can be improved further.
Sqoop may lose when transmitting database synchronization daily record, and in order to avoid database synchronization daily record can be transmitted to target database by MQ, in a kind of possible implementation, the method also comprises:
Described sqoop obtains the database synchronization daily record of described data source, gives described MQ by described database synchronization Log Sender;
Described database synchronization Log Sender is given described target database by described MQ, and the second Preset Time is preserved in described database synchronization daily record.
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
As shown in Figure 3, embodiments provide a kind of method of data syn-chronization, the method can comprise the following steps:
Step 301: described MQ receives the information of the label of the subscription that at least one target database described is sent.
Each target database can subscribe to label to MQ, as long as there are data corresponding to this label just to send to corresponding target database.For example, MQ, data source or third party can provide the label that can subscribe to target database.
Step 302: described MQ, according to the information of the label of described subscription, sets up the corresponding relation of described label and target database.
Step 303:sqoop obtains the data to be synchronized with default label in described data source, and synchronously processes described data to be synchronized, and the data after process are sent to MQ.
The default label of data to be synchronized is one in the label can subscribed in MQ, and this label can be realized by the zone bit of data.Sqoop can carry out data syn-chronization between implementation relation type database and non-relational database, and for example, above-mentioned target database, data source can be that a class is relevant database, a class is non-relational database respectively.
Step 304: described MQ, according to described default label, by the data that described sqoop sends, sends to the target database that described default label is corresponding.
For example, this step can realize in the following manner:
The data that described sqoop sends by described MQ are carried out Data Segmentation and are obtained the subdata after splitting, the each subdata obtained is carried out data encapsulation, subdata after encapsulation is written in the queue of MQ, read described queue, data in the queue of reading are carried out encapsulating dress and obtains packet, give described target database by described Packet Generation.
By the method that the embodiment of the present invention provides, the data source of data syn-chronization and target database are carried out effective decoupling zero, dynamic expansion data syn-chronization demand.Such as: during for needs to Hbase, Storm and third party's service application synchronous same class data, can by Hbase, Storm and third party's service application are docked with MQ, the other end connection data source of MQ, target database carries out the subscription of label to MQ, realizes respective data syn-chronization demand.
Embodiments provide a kind of device and method of data syn-chronization, there is following beneficial effect:
1, a kind of device and method of data syn-chronization is embodiments provided, sqoop and MQ is connected, MQ can be connected with multiple target database, target database can subscribe to label on MQ, the target database of all this labels of subscription will be sent to when MQ receives the data with this label, so just achieve and the data in data source are synchronized in multiple target database simultaneously, improve the efficiency of data syn-chronization.
2, embodiments provide a kind of device and method of data syn-chronization, subscribe to label by target database to MQ, the data source of data syn-chronization and target database are carried out effective decoupling zero, dynamic expansion data syn-chronization demand.
3, embodiments provide a kind of device and method of data syn-chronization, can carry out data re-transmitting by MQ, improve fault-tolerant processing, the height being realized data by MQ is handled up.
It should be noted that, in this article, the relational terms of such as first and second and so on is only used for an entity or operation to separate with another entity or operational zone, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element " being comprised " limited by statement, and be not precluded within process, method, article or the equipment comprising described key element and also there is other same factor.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that programmed instruction is relevant, aforesaid program can be stored in the storage medium of embodied on computer readable, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium in.
Finally it should be noted that: the foregoing is only preferred embodiment of the present invention, only for illustration of technical scheme of the present invention, be not intended to limit protection scope of the present invention.All any amendments done within the spirit and principles in the present invention, equivalent replacement, improvement etc., be all included in protection scope of the present invention.
Claims (10)
1. a device for data syn-chronization, is characterized in that, comprising:
Data source is connected with sqoop, and described sqoop is connected with message queue MQ, and described MQ is connected with at least one target database;
Described sqoop, for obtaining the data to be synchronized with default label in described data source, and synchronously processes described data to be synchronized, and the data after process are sent to described MQ;
Described MQ, for accepting the subscription of described target database to the label for identification data, according to described default label, by the data that described sqoop sends, sends to the target database of the described default label of described subscription.
2. device according to claim 1, is characterized in that, comprising:
Described MQ, also for receiving the failed message of the reception data failure that described target database is sent, and when receiving described failed message in the first Preset Time after the data sent at the described sqoop of transmission, send data corresponding to described failed message to the target database that described failed message is corresponding.
3. device according to claim 1, is characterized in that, comprising:
Described sqoop, also for obtaining the database synchronization daily record of described data source, gives described MQ by described database synchronization Log Sender;
Described MQ, for giving described target database by described database synchronization Log Sender, and preserves the second Preset Time by described database synchronization daily record.
4. device according to claim 1, is characterized in that,
Described MQ, for receiving the information of the label of the subscription that at least one target database described is sent, according to the information of the label of described subscription, set up the corresponding relation of label and target database, according to described default label, by the data that described sqoop sends, send to the target database that described default label is corresponding.
5., according to the arbitrary described device of claim 1-4, it is characterized in that,
Described MQ, data for being sent by described sqoop are carried out Data Segmentation and are obtained the subdata after splitting, the each subdata obtained is carried out data encapsulation, subdata after encapsulation is written in the queue of MQ, read described queue, data in the queue of reading are carried out encapsulating dress and obtains packet, give described target database by described Packet Generation.
6. a method for data syn-chronization, is characterized in that, comprising:
S1:sqoop obtains the data to be synchronized with default label in described data source, and synchronously processes described data to be synchronized, and the data after process are sent to message queue MQ;
S2: described MQ accepts the subscription of described target database to the label for identification data, according to described default label, by the data that described sqoop sends, sends to the target database of the described default label of described subscription.
7. method according to claim 6, is characterized in that, also comprises:
Described MQ receives the failed message of the reception data failure that described target database is sent, and when receiving described failed message in the first Preset Time after the data sent at the described sqoop of transmission, send data corresponding to described failed message to the target database that described failed message is corresponding.
8. method according to claim 6, is characterized in that, also comprises:
Described sqoop obtains the database synchronization daily record of described data source, gives described MQ by described database synchronization Log Sender;
Described database synchronization Log Sender is given described target database by described MQ, and the second Preset Time is preserved in described database synchronization daily record.
9. method according to claim 6, is characterized in that, also comprises before described step S1:
Described MQ receives the information of the label of the subscription that at least one target database described is sent;
Described MQ, according to the information of the label of described subscription, sets up the corresponding relation of described label and target database;
Described S2, comprising:
Described MQ, according to described default label, by the data that described sqoop sends, sends to the target database that described default label is corresponding.
10., according to the arbitrary described method of claim 6-9, it is characterized in that, described S2 comprises:
The data that described sqoop sends by described MQ are carried out Data Segmentation and are obtained the subdata after splitting, the each subdata obtained is carried out data encapsulation, subdata after encapsulation is written in the queue of MQ, read described queue, data in the queue of reading are carried out encapsulating dress and obtains packet, give described target database by described Packet Generation.
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| CN108415723A (en) * | 2018-01-17 | 2018-08-17 | 海尔优家智能科技（北京）有限公司 | Configuration data synchronization method, device, medium based on message queue and equipment |
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Application publication date: 20150603 |