Hi,
OK??I will do not use any rich-format
Suppose the parameter is 5. Then in level 2, will you merge 4 new VM files
to the bigger one, or merge 5 VM files?
I will merge 5 VM files to a bigger one in level 2.
----
??:
Hi,
OK??I will do not use any rich-format
Suppose the parameter is 5. Then in level 2, will you merge 4 new VM files
to the bigger one, or merge 5 VM files?
I will merge 5 VM files to a bigger one in level 2.
-- --
??:
软件学院
> --原始邮件--
> 发件人:
> "dev"
> <
> saint...@gmail.com;
> 发送时间:2020年7月20日(星期一) 下午3:39
> 收件人:"dev"
> 主题:Re: add vm(hot compaction) in tsfile processor
>
>
>
> Hi,
>
Hi,
I convert figure to symbolic..
* when we flush 5(max_vm_num) times, the current level will do compaction
to the next level
1 1 1 1 1
| / / / /
5
* when we flush all 11 times, the compaction procedure is
1 1 1 1 1 1 1 1 1 1 1
| / / / / | / / / /
5 5
* if we close the tsfile, the
发件人:* "dev" ;
> *发送时间:* 2020年7月20日(星期一) 下午3:10
> *收件人:* "dev";
> *主题:* Re: add vm(hot compaction) in tsfile processor
>
> Hi Lingzhe,
>
> >max_vm_num: indicates that a TsFileProcessor has at most the number of
> virtual memory files
>
&
School of Software, Tsinghua University
乔嘉林
清华大学 软件学院
-原始邮件-
发件人:445073309
发送时间:2020-07-20 15:30:46 (星期一)
收件人: dev
抄送:
主题: Re: add vm(hot compaction) in tsfile processor
Hi,
max_vm_num means that the most number of vm files relation to a tsfile's level.
for example, we set max_vm_num=5
Hi,
max_vm_num means that the most number of vm files relation to a tsfile's level.
for example, we set max_vm_num=5 and we flush 11 times, then the compaction
procedure can be described as below:
* when we flush 5(max_vm_num)times, the current level will do compaction
to the next level
* when
Hi Lingzhe,
>max_vm_num: indicates that a TsFileProcessor has at most the number of
virtual memory files
what does this mean? and how do I know what value is suitable? (For
example, if I set it as 1, is there any impact?)
Best,
---
Xiangdong Huang
School of
Hi,
I met a problem that iotdb will write small chunk data when lack of memtable
num, this causes the system to query hot data more slowly.
So I create a new type of file -- vm file, and use it to do hot compaction in
flush processor. With this, we can flexiblily controll the size of each
