CN105095315B - The methods, devices and systems of dynamic regulation Hash link points - Google Patents
The methods, devices and systems of dynamic regulation Hash link points Download PDFInfo
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- CN105095315B CN105095315B CN201410219206.3A CN201410219206A CN105095315B CN 105095315 B CN105095315 B CN 105095315B CN 201410219206 A CN201410219206 A CN 201410219206A CN 105095315 B CN105095315 B CN 105095315B
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Abstract
The present invention discloses a kind of methods, devices and systems of dynamic regulation Hash link points.Wherein Metadata Service Node Controller at predetermined intervals, probe requests thereby is sent to each Metadata Service node M DNi；The current reaction time delays of each Metadata Service node M DNi are recorded as LSi ' (t)；The average delay LSi (t) of MDNi is calculated according to LSi ' (t)；The Hash ring weight Wi (t) of MDNi is calculated according to average delay LSi (t)；The Hash link points hi (t) carried on MDNi is calculated using Hash ring weight Wi (t)；According to the difference of hi (t) and hi (t 1), dynamic regulation is carried out to the Hash link points carried on MDNi.Hash weight is recalculated according to the real-time distribution situation of hot spot metadata by timing probe Metadata Service node capacity, to accordingly adjust the Hash link points of Metadata Service node carrying, realizes the automatic load balancing that metadata stores and accesses.
Description
Technical field
The present invention relates to area information storage, more particularly to the method, apparatus of a kind of dynamic regulation Hash link points and
System.
Background technology
Currently, the metadata storage in object storage is more and more using fault-tolerance and scalability preferable virtual one
Cause property hash algorithm, but virtual consistency hash algorithm is easy after metadata storage reaches certain load because of service section
On the Hash link point of point carrying, hot spot data is unevenly distributed, it is uneven to access temperature and causes data access tilt problem,
It causes mass data access to focus on certain service nodes, forms bottleneck.
Currently, Metadata Service node (MetaData Node, referred to as：MDN) weight is only calculated in system initialization,
Hash link point (HASH Ring Node, referred to as：HRN it) only distributes in system initialization, is no longer adjusted after original allocation.
If hot spot metadata concentrates on the HRN on certain MDN, system can not adjust HRN to idle MDN in real time, and it is negative to mitigate busy MDN
It carries.
Invention content
The embodiment of the present invention provides a kind of methods, devices and systems of dynamic regulation Hash link points.By detecting member
Data server performance, the weight that dynamic regulation Metadata Service node is carried, so as to dynamic regulation Metadata Service section
The Hash link points of point carrying, realize the automatic load balancing that metadata stores and accesses.
According to an aspect of the present invention, a kind of method of dynamic regulation Hash link points is provided, including：
At predetermined intervals, probe requests thereby is sent to each Metadata Service node M DNi；Wherein 1≤i≤n, n are member
The number of data serving node；
The current reaction time delays of each Metadata Service node M DNi are recorded as LSi ' (t)；
The average delay LSi (t) of MDNi is calculated according to LSi ' (t)；
The Hash ring weight Wi (t) of MDNi is calculated according to average delay LSi (t)；
The Hash link points hi (t) carried on MDNi is calculated using Hash ring weight Wi (t)；
According to the difference of hi (t) and hi (t-1), dynamic regulation is carried out to the Hash link points carried on MDNi.
In one embodiment, it according to the difference of hi (t) and hi (t-1), counts the Hash link carried on MDNi and carries out
The step of dynamic regulation includes：
Judge whether hi (t) is more than hi (t-1)；
If hi (t) is more than hi (t-1), the Hash link carried on MDNi is counted and increases a, wherein a is hi (t)-hi
(t-1)。
In one embodiment, if hi (t) is less than hi (t-1), the Hash link carried on MDNi is counted and reduces b,
Wherein b is hi (t-1)-hi (t).
In one embodiment, calculate the Hash link points hi's (t) carried on MDNi using Hash ring weight Wi (t)
Step includes：
Utilize formula
The Hash link points hi (t) carried on MDNi is calculated, wherein H is scheduled virtual Hash link points.
In one embodiment, include according to the step of average delay LSi (t) of LSi ' (t) calculating MDNi：
Utilize formula：
LSi (t)=(1-w1) * LSi ' (t)+w1*LSi (t-1)
The average delay LSi (t) of MDNi is calculated, wherein w1 is preset weights.
In one embodiment, the Hash ring weight Wi (0) of MDNi is determined according to the computing capability of MDNi；
Utilize formula
The Hash link points hi (0) carried on MDNi is calculated, wherein H is scheduled virtual Hash link points.
According to another aspect of the present invention, a kind of Metadata Service node control of dynamic regulation Hash link points is provided
Device, including transmission unit, recording unit, average delay computing unit, Hash ring weight calculation unit, Hash link points calculate
Unit and dynamic regulation unit, wherein：
Transmission unit, at predetermined intervals, probe requests thereby being sent to each Metadata Service node M DNi；Wherein
1≤i≤n, n are the number of Metadata Service node；
Recording unit, for the current reaction time delays of each Metadata Service node M DNi to be recorded as LSi ' (t)；
Average delay computing unit, the average delay LSi (t) for calculating MDNi according to LSi ' (t)；
Hash ring weight calculation unit, the Hash ring weight Wi (t) for calculating MDNi according to average delay LSi (t)；
Hash link points computing unit, for calculating the Hash link carried on MDNi using Hash ring weight Wi (t)
Count hi (t)；
Dynamic regulation unit, for according to the difference of hi (t) and hi (t-1), to the Hash link carried on MDNi count into
Mobile state is adjusted.
In one embodiment, dynamic regulation unit includes that identification module and number of nodes increase module, wherein：
Identification module, for judging whether hi (t) is more than hi (t-1)；
Number of nodes increases module, for the judging result according to identification module, if hi (t) is more than hi (t-1), by MDNi
The Hash link points of upper carrying increase a, and wherein a is hi (t)-hi (t-1).
In one embodiment, dynamic regulation unit further includes number of nodes reduction module, wherein：
Number of nodes reduces module, for the judging result according to identification module, if hi (t) is less than hi (t-1), by MDNi
The Hash link points of upper carrying reduce b, and wherein b is hi (t-1)-hi (t).
In one embodiment, Hash link points computing unit specifically utilizes formula
The Hash link points hi (t) carried on MDNi is calculated, wherein H is scheduled virtual Hash link points.
In one embodiment, average delay computing unit specifically utilizes formula：
LSi (t)=(1-w1) * LSi ' (t)+w1*LSi (t-1)
The average delay LSi (t) of MDNi is calculated, wherein w1 is preset weights.
In one embodiment, Hash ring weight calculation unit determines the Hash of MDNi with specific reference to the computing capability of MDNi
Ring weight Wi (0)；
Hash link points computing unit specifically utilizes formula
The Hash link points hi (0) carried on MDNi is calculated, wherein H is scheduled virtual Hash link points.
According to another aspect of the present invention, a kind of system of dynamic regulation Hash link points, including metadata clothes are provided
Be engaged in Node Controller and Metadata Service node M DNi, wherein 1≤i≤n, n are the number of Metadata Service node, wherein:
Metadata Service Node Controller, the Metadata Service Node Controller provided for any of the above-described embodiment；
Metadata Service node M DNi, for receive Metadata Service Node Controller transmission probe requests thereby when,
Response message is sent to Metadata Service Node Controller.
The present invention is by timing probe Metadata Service node capacity, according to the real-time distribution situation of hot spot metadata, weight
It is new to calculate Hash weight, to accordingly adjust the Hash link points of Metadata Service node carrying, realize metadata storage and
The automatic load balancing of access.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without having to pay creative labor, may be used also for those of ordinary skill in the art
With obtain other attached drawings according to these attached drawings.
Fig. 1 is the schematic diagram of method one embodiment of dynamic regulation Hash link of the present invention points.
Fig. 2 is the schematic diagram of another embodiment of method of dynamic regulation Hash link of the present invention points.
Fig. 3 is the schematic diagram of Metadata Service Node Controller one embodiment of the present invention.
Fig. 4 is the schematic diagram of dynamic regulation unit one embodiment of the present invention.
Fig. 5 is the schematic diagram of system one embodiment of dynamic regulation Hash link of the present invention points.
Fig. 6 is the schematic diagram for implementing one embodiment of the invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Below
Description only actually at least one exemplary embodiment is illustrative, is never used as to the present invention and its application or makes
Any restrictions.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, shall fall within the protection scope of the present invention.
Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments
It is not limited the scope of the invention up to formula and numerical value.
Simultaneously, it should be appreciated that for ease of description, the size of attached various pieces shown in the drawings is not according to reality
Proportionate relationship draw.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as authorizing part of specification.
In shown here and discussion all examples, any occurrence should be construed as merely illustrative, without
It is as limitation.Therefore, the other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent attached drawing in a attached drawing.
Fig. 1 is the schematic diagram of method one embodiment of dynamic regulation Hash link of the present invention points.Preferably, this implementation
The method and step of example can be executed by Metadata Service Node Controller.
Step 101, at predetermined intervals, probe requests thereby is sent to each Metadata Service node M DNi.
Wherein 1≤i≤n, n are the number of Metadata Service node.
Step 102, the current reaction time delays of each Metadata Service node M DNi are recorded as LSi ' (t).
Step 103, the average delay LSi (t) of MDNi is calculated according to LSi ' (t).
Preferably, include according to the step of average delay LSi (t) of LSi ' (t) calculating MDNi：
Utilize formula：
LSi (t)=(1-w1) * LSi ' (t)+w1*LSi (t-1)
The average delay LSi (t) of MDNi is calculated, wherein w1 is preset weights.
Step 104, the Hash ring weight Wi (t) of MDNi is calculated according to average delay LSi (t).
Preferably, by calculating the average value of LSi (t) to obtain system average response time delay LA (t).By LA (t) conducts
The Hash ring weight Wi (t) of MDNi is calculated according to FAST TCP for parameter.Due to skilled in the art realises that how specific
Wi (t) is calculated, therefore is not unfolded to describe here.
Step 105, the Hash link points hi (t) carried on MDNi is calculated using Hash ring weight Wi (t).
Preferably, the step of Hash link points hi (t) carried on MDNi is calculated using Hash ring weight Wi (t) can wrap
It includes：
Utilize formula
The Hash link points hi (t) carried on MDNi is calculated, wherein H is scheduled virtual Hash link points.
Step 106, it according to the difference of hi (t) and hi (t-1), counts the Hash link carried on MDNi into Mobile state tune
Section.
Method based on the dynamic regulation Hash link points that the above embodiment of the present invention provides, passes through timing probe member number
Hash weight is recalculated according to the real-time distribution situation of hot spot metadata according to service node ability, to accordingly adjust first number
According to the Hash link points of service node carrying, the automatic load balancing that metadata stores and accesses is realized.
Fig. 2 is the schematic diagram of another embodiment of method of dynamic regulation Hash link of the present invention points.On as shown in Fig. 2,
The step of carrying out dynamic regulation to the Hash link points carried on MDNi according to the difference of hi (t) and hi (t-1) is stated to may include：
Step 201, judge whether hi (t) is more than hi (t-1).If hi (t) is more than hi (t-1), 202 are thened follow the steps；It is no
Then follow the steps 203.
Step 202, the Hash link carried on MDNi is counted and increases a, wherein：
A=hi (t)-hi (t-1).
Later, other steps of the present embodiment are no longer executed.
Step 203, judge whether hi (t) is less than hi (t-1).If hi (t) is less than hi (t-1), 204 are thened follow the steps；It is no
Then follow the steps 205.
Step 204, the Hash link carried on MDNi is counted and reduces b, wherein：
B=hi (t-1)-hi (t).
Later, other steps of the present embodiment are no longer executed.
Step 205, the Hash link points carried on MDNi are not adjusted.
In one embodiment, in the case where system is in original state, the Hash ring weight Wi (0) of MDNi is according to the meter of MDNi
Calculation ability is determined.Such as calculating determination can be carried out according to the CPU, memory space and network capabilities etc. of MDNi.
Correspondingly, using formula
The Hash link points hi (0) carried on MDNi is calculated, wherein H is scheduled virtual Hash link points.
Fig. 3 is the schematic diagram of Metadata Service Node Controller one embodiment of the present invention.As shown in figure 3, metadata takes
Business Node Controller includes transmission unit 301, recording unit 302, average delay computing unit 303, Hash ring weight calculation list
Member 304, Hash link points computing unit 305 and dynamic regulation unit 306.Wherein：
Transmission unit 301, at predetermined intervals, probe requests thereby being sent to each Metadata Service node M DNi；
Wherein 1≤i≤n, n are the number of Metadata Service node.
Recording unit 302, for the current reaction time delays of each Metadata Service node M DNi to be recorded as LSi ' (t).
Average delay computing unit 303, the average delay LSi (t) for calculating MDNi according to LSi ' (t).
Preferably, average delay computing unit 303 specifically utilizes formula：
LSi (t)=(1-w1) * LSi ' (t)+w1*LSi (t-1)
The average delay LSi (t) of MDNi is calculated, wherein w1 is preset weights.
Hash ring weight calculation unit 304, the Hash ring weight Wi (t) for calculating MDNi according to average delay LSi (t).
Hash link points computing unit 305, for calculating the Hash ring carried on MDNi using Hash ring weight Wi (t)
Number of nodes hi (t).
Preferably, Hash link points computing unit 305 specifically utilizes formula
The Hash link points hi (t) carried on MDNi is calculated, wherein H is scheduled virtual Hash link points.
Dynamic regulation unit 306 counts to the Hash link carried on MDNi for the difference according to hi (t) and hi (t-1)
Carry out dynamic regulation.
Metadata Service Node Controller based on the dynamic regulation Hash link points that the above embodiment of the present invention provides,
Hash weight is recalculated according to the real-time distribution situation of hot spot metadata by timing probe Metadata Service node capacity,
To accordingly adjust the Hash link points of Metadata Service node carrying, realize that the automatic load that metadata stores and accesses is equal
Weighing apparatus.
Preferably, Hash ring weight calculation unit 304 determines that the Hash ring of MDNi is weighed with specific reference to the computing capability of MDNi
Weight Wi (0).
Hash link is counted, and computing unit 305 is specific to utilize formula
The Hash link points hi (0) carried on MDNi is calculated, wherein H is scheduled virtual Hash link points.
Fig. 4 is the schematic diagram of dynamic regulation unit one embodiment of the present invention.As shown in figure 4, dynamic regulation unit includes
Identification module 401 and number of nodes increase module 402.Wherein：
Identification module 401, for judging whether hi (t) is more than hi (t-1).
Number of nodes increases module 402,, will if hi (t) is more than hi (t-1) for the judging result according to identification module
The Hash link points carried on MDNi increase a, and wherein a is hi (t)-hi (t-1).
Preferably, dynamic regulation unit further includes that number of nodes reduces module 403.Wherein：
Number of nodes reduces module 403, for the judging result according to identification module 401, if hi (t) is less than hi (t-1),
The Hash link carried on MDNi is counted and reduces b, wherein b is hi (t-1)-hi (t).
Fig. 5 is the schematic diagram of system one embodiment of dynamic regulation Hash link of the present invention points.As shown in figure 5, should
System includes Metadata Service Node Controller 501 and Metadata Service node M DNi502, wherein 1≤i≤n, n are metadata
The number of service node.Wherein:
Metadata Service Node Controller 501, the Metadata Service node control being related to for any embodiment in Fig. 3 or Fig. 4
Device processed.
Metadata Service node M DNi502, for being asked in the detection for receiving the transmission of Metadata Service Node Controller 501
When asking, response message is sent to Metadata Service Node Controller 501.
System based on the dynamic regulation Hash link points that the above embodiment of the present invention provides, passes through timing probe member number
Hash weight is recalculated according to the real-time distribution situation of hot spot metadata according to service node ability, to accordingly adjust first number
According to the Hash link points of service node carrying, the automatic load balancing that metadata stores and accesses is realized.
Below by specific example, the present invention will be described, as shown in Figure 6.At a time, each MDNi is respectively configured
There are a different Hash link points, such as MDN1 is configured to 1~100 totally 100, MDN2 is configured to 1~50 totally 50 ... ...,
MDNn is configured to 1~200 totally 100.Dynamic regulation through the invention, in subsequent time, MDN1 is configured to 1~70 totally 70
A, MDN2 is configured to 1~80 totally 80 ... ..., and MDNn is configured to 1~180 totally 180.It as a result, can be according to network condition and each
The loading condition of MDN timely updates the points of the Hash link on each MDN, to make metadata access more uniformly, stablize, to whole
A storage system brings more preferable autgmentability, stability and access efficiency.
One of ordinary skill in the art will appreciate that realizing that all or part of step of above-described embodiment can pass through hardware
It completes, relevant hardware can also be instructed to complete by program, the program can be stored in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..
Description of the invention provides for the sake of example and description, and is not exhaustively or will be of the invention
It is limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.It selects and retouches
It states embodiment and is to more preferably illustrate the principle of the present invention and practical application, and those skilled in the art is enable to manage
Various embodiments with various modifications of the solution present invention to design suitable for special-purpose.
Claims (9)
1. a kind of method of dynamic regulation Hash link points, which is characterized in that including：
At predetermined intervals, probe requests thereby is sent to each Metadata Service node M DNi；Wherein 1≤i≤n, n are metadata
The number of service node；
The current reaction time delays of each Metadata Service node M DNi are recorded as LSi ' (t)；
The average delay LSi (t) of MDNi is calculated according to LSi ' (t)；
The Hash ring weight Wi (t) of MDNi is calculated according to average delay LSi (t)；
The Hash link points hi (t) carried on MDNi is calculated using Hash ring weight Wi (t)；
According to the difference of hi (t) and hi (t-1), dynamic regulation is carried out to the Hash link points carried on MDNi, wherein in hi (t)
In the case of more than hi (t-1), the Hash link carried on MDNi is counted and increases a, wherein a is hi (t)-hi (t-1)；In hi
(t) in the case of being less than hi (t-1), the Hash link carried on MDNi is counted and reduces b, wherein b is hi (t-1)-hi (t).
2. according to the method described in claim 1, it is characterized in that,
Include using the step of Hash link points hi (t) carried on Hash ring weight Wi (t) calculating MDNi：
Utilize formula
The Hash link points hi (t) carried on MDNi is calculated, wherein H is scheduled virtual Hash link points.
3. according to the method described in claim 1, it is characterized in that,
Include according to the step of average delay LSi (t) of LSi ' (t) calculating MDNi：
Utilize formula：
LSi (t)=(1-w1) * LSi ' (t)+w1*LSi (t-1)
The average delay LSi (t) of MDNi is calculated, wherein w1 is preset weights.
4. according to the method described in claim 1, it is characterized in that,
The Hash ring weight Wi (0) of MDNi is determined according to the computing capability of MDNi；
Utilize formula
The Hash link points hi (0) carried on MDNi is calculated, wherein H is scheduled virtual Hash link points.
5. a kind of Metadata Service Node Controller of dynamic regulation Hash link points, which is characterized in that including transmission unit,
Recording unit, average delay computing unit, Hash ring weight calculation unit, Hash link points computing unit and dynamic regulation list
Member, wherein：
Transmission unit, at predetermined intervals, probe requests thereby being sent to each Metadata Service node M DNi；Wherein 1≤i
≤ n, n are the number of Metadata Service node；
Recording unit, for the current reaction time delays of each Metadata Service node M DNi to be recorded as LSi ' (t)；
Average delay computing unit, the average delay LSi (t) for calculating MDNi according to LSi ' (t)；
Hash ring weight calculation unit, the Hash ring weight Wi (t) for calculating MDNi according to average delay LSi (t)；
Hash link points computing unit is counted for being calculated the Hash link carried on MDNi using Hash ring weight Wi (t)
hi(t)；
Dynamic regulation unit counts into action to the Hash link carried on MDNi for the difference according to hi (t) and hi (t-1)
State is adjusted；
Wherein dynamic regulation unit includes：
Identification module, for judging whether hi (t) is more than hi (t-1)；
Number of nodes increases module,, will in the case where hi (t) is more than hi (t-1) for the judging result according to identification module
The Hash link points carried on MDNi increase a, and wherein a is hi (t)-hi (t-1)；
Number of nodes reduces module,, will in the case where hi (t) is less than hi (t-1) for the judging result according to identification module
The Hash link points carried on MDNi reduce b, and wherein b is hi (t-1)-hi (t).
6. Metadata Service Node Controller according to claim 5, which is characterized in that
Hash link points computing unit specifically utilizes formula
The Hash link points hi (t) carried on MDNi is calculated, wherein H is scheduled virtual Hash link points.
7. Metadata Service Node Controller according to claim 5, which is characterized in that
Average delay computing unit specifically utilizes formula：
LSi (t)=(1-w1) * LSi ' (t)+w1*LSi (t-1)
The average delay LSi (t) of MDNi is calculated, wherein w1 is preset weights.
8. Metadata Service Node Controller according to claim 5, which is characterized in that
Hash ring weight calculation unit determines the Hash ring weight Wi (0) of MDNi with specific reference to the computing capability of MDNi；
Hash link points computing unit specifically utilizes formula
The Hash link points hi (0) carried on MDNi is calculated, wherein H is scheduled virtual Hash link points.
9. a kind of system of dynamic regulation Hash link points, which is characterized in that including Metadata Service Node Controller and member
Data serving node MDNi, wherein 1≤i≤n, n are the number of Metadata Service node, wherein:
Metadata Service Node Controller is the Metadata Service Node Controller described in any one of claim 5-8；
Metadata Service node M DNi, for receive Metadata Service Node Controller transmission probe requests thereby when, Xiang Yuan
Data serving node controller sends response message.
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| CN109510855B (en) * | 2017-09-15 | 2020-07-28 | 腾讯科技（深圳）有限公司 | Event distribution system, method and device |
| CN110580253B (en) * | 2019-09-10 | 2022-05-31 | 网易（杭州）网络有限公司 | Time sequence data set loading method and device, storage medium and electronic equipment |
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