heytong opened a new issue #3073:
URL: https://github.com/apache/apisix/issues/3073
### Issue description
[error] 13264#13264: *108 [lua] config_etcd.lua:448: failed to fetch data
from etcd: /home/admin/apisix-2.0/apisix/core/etcd.lua:84: attempt to index
field 'header' (a nil value)
stack traceback:
/home/admin/apisix-2.0/apisix/core/etcd.lua:84: in function 'get_format'
/home/admin/apisix-2.0/apisix/core/config_etcd.lua:98: in function
'readdir'
/home/admin/apisix-2.0/apisix/core/config_etcd.lua:176: in function
'sync_data'
/home/admin/apisix-2.0/apisix/core/config_etcd.lua:424: in function
</home/admin/apisix-2.0/apisix/core/config_etcd.lua:414>
[C]: in function 'xpcall'
/home/admin/apisix-2.0/apisix/core/config_etcd.lua:414: in function
</home/admin/apisix-2.0/apisix/core/config_etcd.lua:405>, etcd key:
/apisix/routes, context: ngx.timer
### Environment
* apisix version (2.0 & 2.1):
* OS: any
### Minimal test code / Steps to reproduce the issue
1、debug : config_etcd.lua:100: readdir():
-=-=-=-=-={"code":8,"error":"grpc: received message larger than max (4236894
vs. 4194304)","message":"grpc: received message larger than max (4236894 vs.
4194304)"}, context: ngx.timer
### What's the actual result? (including assertion message & call stack if
applicable)
1、The amount of data on the "/apisix/routes" is too large, We really need so
much data.
### What's the expected result?
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