kylincode opened a new issue, #6423:
URL: https://github.com/apache/hudi/issues/6423
After schema evaluation, when time travel queries the historical data, the
results show the latest schema instead of the historical schema
Steps to reproduce the behavior:
1. spark sql create table t1, sql:
`create table t1 (
id int,
name string,
price double,
ts long
) using hudi
location '/tmp/t1'
options (
type = 'mor',
primaryKey = 'id',
preCombineField = 'ts'
);`
2. insert data
`insert into t1 values(1,'Tom',0.9,1000);`
3. drop price column
`alter table t1 drop column price;`
4. Time Travel Query
`select * from t1 timestamp as of '20220817161104255'`
It is found that when time travel queries historical data, the results show
the latest schema (only include id、name、ts columns) instead of the historical
schema.
**Expected behavior**
when time travel queries historical data, the results show the schema of
historical time points
**Environment Description**
* Hudi version : 0.11.0
* Spark version : 3.2.2
* Storage (HDFS/S3/GCS..) : local mac os
* Running on Docker? (yes/no) : no
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