Nebula Graph NebulaGraph for Beginners, 26 Oct 2021

Previous Meeting Next Meeting

⏯

youtube image

►

From YouTube: NebulaGraph v2.6.0 preview (CN Version & EN Subtitle)

Description

In this video, we will talk you through details about the new feature and enhancement in NebulaGraph v2.6.0. New features are including Support TOSS (transition on storage side), ZONE, GEO Spatial, return query result as JSON format etc. Enhancements are Optimization in computation of index scan limit pushdown, calculation of sampling and limit pushdown at each step of the go statement. In addition, data format is better yielded and prefix bloom filter is enabled by default to improve performance etc. Welcome to discuss on our Slack: nebulagraph.slack.com
Tips: if you want to see English subtitle, please switch the subtitles to English in the settings.

A

Hi ~ hello, everyone long time no see. I was thinking this is hera, hera, hi, ~, hi, ~, hello, everyone.

A

This good period, we mainly do, is to tell you about the upcoming release of version 2.6.0. This nebula graph.

A

Because this time we have a lot of new some of the features by then of course,, optimization and bug fixes. So we thought for the first call to tell us about the specific. What are the new features? It.

B

Is good that this time we will do so in a way, no formal, more natural conversation say.

B

We want to look at the effect of how to welcome you to give us feedback.

B

That we know on a version 2.5.0 release it our main focus in many of the underlying kernel and some optimization.

B

So new features are not particularly large, but this time release we have a lot of new features.

B

Is the first first toss is transection on storage side.

B

Storage side of the transaction is that it solves. The problem was when we know there is a side.

B

Which, in fact, is there are two start and end points if it, it will exist in two places at two partition.

B

That turn on this feature will be the consistency of this angle to make it compulsory to off by default. It is a.

B

Document you can refer to choose whether or not to open it,. It can be for different. It is a.

B

Space to do next zone, this function is also a very important function.

B

Of a number of different scenarios that it is possible.

B

To specifically different space, it can make a binding region for a different storage entity of the for example,. If you.

B

Divide that is deployed across the.

B

Room, or you want to have a particularly flat, a particularly large cluster, but you want a certain space of only a portion of the storage node to which the distribution of.

B

This function,, then it becomes very important for details,. Please refer to the document.

B

≪B≫The next function is the information about the geographical location that we have been waiting for for a long, time</b>, <b>geography and special such a function, (geo)</b>.

B

We now finally support geography-based type of a data and based on a query: geographical functionality.

B

Is also a very important function.

B

And is about safety? We now support based on a encryption tos.

B

Can we look now at least python client also has supported. The core support is already.

B

A very useful function.

B

Also returns, a json format is finally supported us in many scenes that we do not need to unlock the kind of nested objects.

B

That you can choose the optional client sends a request to send when you return, json format.

B

Can glance inside the structure and also a lot easier to end customers of some languages over and over again direct reference to deal directly with the return result.

A

Of this, this,, then I remember my impression of this is quite early of the former.

A

May 1.x version of the user when he brought up because a lot of our users are developers and they all have a different language clients. What then put this (demand).

A

And now, finally, we can easily go use for the developers of the fine is a good.

B

(Function), then the next is our support and then to create it inside the schema of existing space. For such a call, clone of the original function of.

B

The specific data it is that you create a new space.

B

Then you can specify explicitly specify another space you're going to exactly the same schema structure such as a function of such a tag, edge type.

A

Schema that is just on the cloning mate in the space right.

B

Specifically, for example,, it is for you to do, is a test of a space and then what.

B

You want to do an experiment with this thing and then actually need space inside the structure is the same as.

B

That in you may want to have to put that space inside the former ddl.

B

Various definitions which it gave him out or keep it and then load into a new space where, after you first created.

B

It with this good, a sugar line, and then you can direct it to directly create good. He brought all that schema is very convenient.

A

And practical tingting very good inside then this is, it does not contain. Data right right right is purely.

B

A tool under a schema that is a crash dump breakpad. This is google's, then, that we have now integrated come.

B

But it is worth noting that we have not done so on an integrated arm architecture. X86 only now can use the situation.

B

Then we look forward to the following is to be a part of our current index calculation indexscan long push down push down too well limit up.

B

So it can really limit can improve performance on the limit. Lookup.

B

On the storage side, it will limit the data returned to the query engine to take the.

B

Limit then it will really be limit on. This will be greatly improved performance.

A

The high limit pushdown this function so that the voice of the community, if you want to try,, then we are welcome and there after the trial, is over. What.

A

The next scene or recommend the use of a sense of speaking, also welcome to share right now and then.

B

In the above forum in fact,, these have been merged in the master commit inside that we now send this video's release when we did not do it.

B

But if you are interested, you can get to test the master image to play around with.

B

It and then we are similar sampling pushdown- also do a good job of that. Now that the sampling and limit pushdown go in there and we do go.

B

Then this feature is actually a small hit us in the bag is a small show script because many students have raised their communities want to.

B

Have some scenes that you want to copy all configuration inside a meta to another place that might be a machine such as this meta want to change it. It is kind of broken or even.

B

How he wanted to change from a three (meta)? We did not before a whole package of interfaces to do things.

B

That, in essence, it is likely you are to follow a step by step procedure to gingerly file, transfer, changing for the better in the past corresponding field and then play it up.

B

Now that we encapsulates a small script to help direct us to do this and on a number of host specific.

B

Example: metad config inside some of the local ip. What it script also provides the option to replace it with what you want directly to the target's ip.

B

We can take a look. This is also very good that I have encountered users often ask me about how this is a put.

A

Inside a meta data replication or copy all things to give them a look inside the forum before when I was on another machine or cluster approach,.

B

And then delete the tag that it is another example of a verext. In fact, we all know that there can be multiple tag.

B

That we now offer this this action (operation), this expression can be a point.. It can be both a user and a merchant.

B

≪B≫Then we want to turn it into a pure user. delete. The merchant tag.<<b>the expression is now can do call delete tag, </, b>.

B

Next is the introduction of a new function can help you link. The two string finally also supports.

B

A new feature that is the last we have introduced a new small expression is show meta leader.

B

That this expression will be able to get a functional meta leader. It is also quite useful.

B

From your recent heartbeat inside and then we'll briefly introduce the optimization of several highlight the first.

B

Point is that we optimize some of the statements yield in fact,. The format.

B

Is to yield under different scenarios to give it a standardized format.

B

We use it really is not much affected. If you encounter specific problems that you can refer to.

B

Another document or pr that optimization is now enabled by default, based bloom filter, prefix.

B

Before we default on the whole key of.

B

Bloom filter, bloom filter will actually take up some memory space in exchange for the performance of some queries.

B

It can potentially reduce the access of the hard disk read block.

B

But the whole in fact,. It is just a key point for our investigation.

B

That the enumeration kv correspond to statements in the fact that we now only fetch nebula.

B

But actually not fetch a high frequency of a paradigm of a query being used, so we turned it into a bloom filter, prefix it more applicable to the scope of inquiry.

B

And we now support the server to verify the version of the client.

B

That this is actually a experience of a promoted. Our this remote call is thrift agreement.

B

That we, each medium (version), is the change in the digital intermediate version. After the point of it,.

B

We compatible client on this thrift will update. It will have compatibility issues for clients.

B

That before sometimes not very far, two incompatible versions of the client and core, but it is still certain to do some preliminary communication on the.

B

Acquisition but in fact, have been messed up some of the data that we have now to prevent. It happened because our core from the server and the client will go to verify.

B

Specific words to remind everyone must see a document, and each repo inside it has a version of the matrix describe it between different versions of the client and the surrounding tools and core correspondence.

A

Is this had made prior to the new user, is also very friendly to new users, may not understand some versions.

A

Of the document which you can, then you can search for keywords directly in the release. Version of the search is not clear when.

A

It will then have a complete set of some information corresponds to the version they are put together and then the next point of it is optimized shard fragments of time for it.

B

Before we pull this flow, behavior is not set limits that sometimes it will affect the business.

B

That now we have introduced a mechanism to limit the rate of this pull this rate. This is a small optimization point.

B

Another note we now limits show jobs, behavior.

B

Displays the job must and the results only show the current space that this in particular space inside is a natural for a similar.

B

Optimization of our rights to the character have made changes and now, in addition to other roles, guest privilege, it has also been working.

B

To optimize fact that this is very important to detect the water level of.

B

The previous version, we know that we just introduced for the first time, introduces a memory function on the water level,, but its implementation has some flaws in this time that we put it out to optimize.

B

Memory usage cache start either in-house or host os inside the container are now ready and compatible support of.

B

That last point, it is an optimized version, introduces us on a slow query. We can query all of the ongoing inquiry and can choose to kill this query, kill it.

B

Before then, we know that we only support 2.5 times to kill it. This query: in fact, only the query engine inside graphd inside to kill the process.

B

That now we will be killed so that this is an upgrade over the storaged inside of the process.

B

Is that all of us optimize? The point that we of course also contains a lot of bug, fix.

B

Then we don't re here to tell you that in fact,, even the points I mentioned earlier, we still do just as we carry out a pre-warm-up that we still have.

B

A reference to our final release of the content and release note.

A

That this issue of 's program, we'll tell you about some of the new features- include optimized 2.6.0.

A

If you have any questions at a later experience them or to report, a bug, then welcome to contact us, and we will also.

A

Have some bug reported that some community activities associated with the reported bug may be integral.

A

To what we can look at it, and then we will open later this himalayan some audio content channels.

A

Like the contents of this issue will also have an audio version of the himalayas, we can go on this search. Nebula graph account.

A

The account and then, if you have what it takes to communicate, want to know the contents of the message can tell us. Thank you. Bye see our next issue.