lit2430 opened a new pull request, #14322:
URL: https://github.com/apache/doris/pull/14322
# Proposed changes
Issue Number: close #xxx
## Problem summary
When useing dorisWrite loading data , DorisWriter create a
DorisWriterManager object when Initialize . Meanwhile , in the construction
method of DorisWriterManager ,it will create a DorisStreamLoadObserver object .
In DorisStreamLoadObserver object , it is mainly to obtain the load host
through getLoadHost() method and "pos" property . When create a new
DorisStreamLoadObserver object , the "pos" value always equals 0 ,if you
connect BE running streamload task and "hostList" connection no change , you
always get the same host . This will cause all the streamload tasks to running
on the same node, resulting in too many streamload requests for a BE node ,
cause OOM error.
Describe your changes.
When you obtain the load host, it will be shuffered the "hostList"
connection firstly, and then obtain the host with pos=0 from the "hostlist". If
the connection is successful, return the host. If the host connection failed,
it will be incremented obtain the host in the "hostlist" until the connection
is successful.
## Checklist(Required)
1. Does it affect the original behavior:
- [√ ] Yes
- [ ] No
- [ ] I don't know
2. Has unit tests been added:
- [ ] Yes
- [√] No
- [ ] No Need
3. Has document been added or modified:
- [ ] Yes
- [√] No
- [ ] No Need
4. Does it need to update dependencies:
- [ ] Yes
- [√ ] No
5. Are there any changes that cannot be rolled back:
- [ ] Yes (If Yes, please explain WHY)
- [√ ] No
## Further comments
If this is a relatively large or complex change, kick off the discussion at
[d...@doris.apache.org](mailto:d...@doris.apache.org) by explaining why you
chose the solution you did and what alternatives you considered, etc...
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