rewrite func(para) over (partition by unique_keys)
1. func() is count(non-null) or rank/dense_rank/row_number -> 1
2. func(para) is min/max/sum/avg/first_value/last_value -> para
e.g
select max(c1) over(partition by pk) from t1;
-> select c1 from t1;
nereids support alter view stmt.
e.g. ALTER VIEW example_db.example_view
(
c1 COMMENT "column 1",
c2 COMMENT "column 2",
c3 COMMENT "column 3"
)
AS SELECT k1, k2, SUM(v1) FROM example_table
GROUP BY k1, k2
For now, it will reset the next journal id and return if the OP_TIMESTAMP
operation writes failed. Because BDBJE will replicate the committed txns (only
persisted in BDB log, but not replicated to other members) to FOLLOWERs after
the connection resumed, directly resetting the next journal id and returning
will cause subsequent txn written to the same journal ID not to be replayed by
the FOLLOWERS. So for OP_TIMESTAMP operation, try to write until it succeeds.
The partition key information recorded in PARTITION_KEYS table is sorted according to the INTEGER_IDX field, so we need to add an 'order by' clause to ensure that the obtained partition names are ordered.
Many domestic cloud vendors are compatible with the s3 protocol. However, early versions of s3 client will only generate path style http requests (https://github.com/aws/aws-sdk-java-v2/pull/763) when encountering endpoints that do not start with s3, while some cloud vendors only support virtual host style http request.
Therefore, Doris used `forceVirtualHosted` in `S3URI` to convert it into a virtual hosted path and implemented it through path style.
For example:
For s3 uri `s3://my-bucket/data/file.txt`, It will eventually be parsed into:
- virtualBucket: my-bucket
- Bucket: data (bucket must be set, otherwise the s3 client will report an error) Especially this step is particularly tricky because of the limitations of the s3 client.
- Key: file.txt
The path style mode is used to generate an http request similar to the virtual host by setting the endpoint to virtualBucket + original endpoint, setting the bucket and key.
**However, the bucket and key here are inconsistent with the original concepts of s3, but the aws client happens to be able to generate an http request similar to the virtual host through the path style mode.**
However, after #30799 we have upgrade the aws sdk version from 2.17.257 to 2.20.131. The current aws s3 client can already generate a virtual host by third party by default style of http request. So in #31111 need to set the path style option, let the s3 client use doris' virtual bucket mechanism to continue working.
**Finally, the virtual bucket mechanism is too confusing and tricky, and we no longer need it with the new version of s3 client.**
### Resolution:
Rewrite `S3URI` to remove tricky virtual bucket mechanism and support different uri styles by flags.
This class represents a fully qualified location in S3 for input/output operations expressed as as URI.
#### For AWS S3, URI common styles:
- AWS Client Style(Hadoop S3 Style): `s3://my-bucket/path/to/file?versionId=abc123&partNumber=77&partNumber=88`
- Virtual Host Style: `https://my-bucket.s3.us-west-1.amazonaws.com/resources/doc.txt?versionId=abc123&partNumber=77&partNumber=88`
- Path Style: `https://s3.us-west-1.amazonaws.com/my-bucket/resources/doc.txt?versionId=abc123&partNumber=77&partNumber=88`
Regarding the above-mentioned common styles, we can use <code>isPathStyle</code> to control whether to use path style
or virtual host style.
"Virtual host style" is the currently mainstream and recommended approach to use, so the default value of
<code>isPathStyle</code> is false.
#### Other Styles:
- Virtual Host AWS Client (Hadoop S3) Mixed Style:
`s3://my-bucket.s3.us-west-1.amazonaws.com/resources/doc.txt?versionId=abc123&partNumber=77&partNumber=88`
- Path AWS Client (Hadoop S3) Mixed Style:
`s3://s3.us-west-1.amazonaws.com/my-bucket/resources/doc.txt?versionId=abc123&partNumber=77&partNumber=88`
For these two styles, we can use <code>isPathStyle</code> and <code>forceParsingByStandardUri</code>
to control whether to use.
Virtual Host AWS Client (Hadoop S3) Mixed Style: <code>isPathStyle = false && forceParsingByStandardUri = true</code>
Path AWS Client (Hadoop S3) Mixed Style: <code>isPathStyle = true && forceParsingByStandardUri = true</code>
When the incoming location is url encoded, the encoded string will be returned.
For <code>getKey()</code>, <code>getQueryParams()</code> will return the encoding string
1. support multi thread concurrency for performance
2. support retry count and infinite retry
3. add a config to log doris stream load request header and response
4. add a config to log speed for better observability
Fix error like:
```
8# google::LogMessageFatal::~LogMessageFatal() in /mnt/hdd01/ci/master-deploy/be/lib/doris_be
9# doris::vectorized::Block::clear_column_data(int) in /mnt/hdd01/ci/master-deploy/be/lib/doris_be
10# doris::vectorized::ParquetReader::get_next_block(doris::vectorized::Block*, unsigned long*, bool*) at /home/zcp/repo_center/doris_master/doris/be/src/vec/exec/format/parquet/vparquet_reader.cpp:514
11# doris::vectorized::VFileScanner::_get_block_impl(doris::RuntimeState*, doris::vectorized::Block*, bool*) at /home/zcp/repo_center/doris_master/doris/be/src/vec/exec/scan/vfile_scanner.cpp:333
12# doris::vectorized::VScanner::get_block(doris::RuntimeState*, doris::vectorized::Block*, bool*) at /home/zcp/repo_center/doris_master/doris/be/src/vec/exec/scan/vscanner.cpp:132
13# doris::vectorized::VScanner::get_block_after_projects(doris::RuntimeState*, doris::vectorized::Block*, bool*) at /home/zcp/repo_center/doris_master/doris/be/src/vec/exec/scan/vscanner.cpp:99
```
Because source logical column is the destination logical column if logical converter is consistent. Previously, the reference of column was reset after the conversion was completed, but if an EOF occurred, it was returned in advance, but EOF is not a true error.
```
if (_logical_converter->is_consistent()) {
// If logical converter is consistent, _src_logical_column is the final destination column,
// other components will check the use count
_src_logical_column.reset();
}
```
run: select TABLE_SCHEMA as a, sum(TABLE_ROWS) as b from tables group by TABLE_SCHEMA limit 2;
old output:
TABLE_SCHEMA Nullable(Int64)_1
0 regression_test_mv_p0_sum_count 9
1 regression_test_query_p0_sql_functions_string_functions 70414
now output:
a b
0 regression_test_mv_p0_sum_count 9
1 regression_test_query_p0_sql_functions_string_functions 70414
