mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-12 17:32:32 +00:00
60 lines
3.1 KiB
Markdown
60 lines
3.1 KiB
Markdown
|
---
|
||
|
|
slug: /en/operations/system-tables/blob_storage_log
|
||
|
|
---
|
||
|
|
# Blob Storage Operations Log
|
||
|
|
|
||
|
|
Contains logging entries with information about various blob storage operations such as uploads and deletes.
|
||
|
|
|
||
|
|
Columns:
|
||
|
|
|
||
|
|
- `event_date` ([Date](../../sql-reference/data-types/date.md)) — Date of the event.
|
||
|
|
- `event_time` ([DateTime](../../sql-reference/data-types/datetime.md)) — Time of the event.
|
||
|
|
- `event_time_microseconds` ([DateTime64](../../sql-reference/data-types/datetime64.md)) — Time of the event with microseconds precision.
|
||
|
|
- `event_type` ([Enum8](../../sql-reference/data-types/enum.md)) — Type of the event. Possible values:
|
||
|
|
- `'Upload'`
|
||
|
|
- `'Delete'`
|
||
|
|
- `'MultiPartUploadCreate'`
|
||
|
|
- `'MultiPartUploadWrite'`
|
||
|
|
- `'MultiPartUploadComplete'`
|
||
|
|
- `'MultiPartUploadAbort'`
|
||
|
|
- `query_id` ([String](../../sql-reference/data-types/string.md)) — Identifier of the query associated with the event, if any.
|
||
|
|
- `thread_id` ([UInt64](../../sql-reference/data-types/int-uint.md#uint-ranges)) — Identifier of the thread performing the operation.
|
||
|
|
- `thread_name` ([String](../../sql-reference/data-types/string.md)) — Name of the thread performing the operation.
|
||
|
|
- `disk_name` ([LowCardinality(String)](../../sql-reference/data-types/lowcardinality.md)) — Name of the associated disk.
|
||
|
|
- `bucket` ([String](../../sql-reference/data-types/string.md)) — Name of the bucket.
|
||
|
|
- `remote_path` ([String](../../sql-reference/data-types/string.md)) — Path to the remote resource.
|
||
|
|
- `local_path` ([String](../../sql-reference/data-types/string.md)) — Path to the metadata file on the local system, which references the remote resource.
|
||
|
|
- `data_size` ([UInt32](../../sql-reference/data-types/int-uint.md#uint-ranges)) — Size of the data involved in the upload event.
|
||
|
|
- `error` ([String](../../sql-reference/data-types/string.md)) — Error message associated with the event, if any.
|
||
|
|
|
||
|
|
**Example**
|
||
|
|
|
||
|
|
Suppose a blob storage operation uploads a file, and an event is logged:
|
||
|
|
|
||
|
|
```sql
|
||
|
|
SELECT * FROM system.blob_storage_log WHERE query_id = '7afe0450-504d-4e4b-9a80-cd9826047972' ORDER BY event_date, event_time_microseconds \G
|
||
|
|
```
|
||
|
|
|
||
|
|
```text
|
||
|
|
Row 1:
|
||
|
|
──────
|
||
|
|
event_date: 2023-10-31
|
||
|
|
event_time: 2023-10-31 16:03:40
|
||
|
|
event_time_microseconds: 2023-10-31 16:03:40.481437
|
||
|
|
event_type: Upload
|
||
|
|
query_id: 7afe0450-504d-4e4b-9a80-cd9826047972
|
||
|
|
thread_id: 2381740
|
||
|
|
disk_name: disk_s3
|
||
|
|
bucket: bucket1
|
||
|
|
remote_path: rrr/kxo/tbnqtrghgtnxkzgtcrlutwuslgawe
|
||
|
|
local_path: store/654/6549e8b3-d753-4447-8047-d462df6e6dbe/tmp_insert_all_1_1_0/checksums.txt
|
||
|
|
data_size: 259
|
||
|
|
error:
|
||
|
|
```
|
||
|
|
|
||
|
|
In this example, upload operation was associated with the `INSERT` query with ID `7afe0450-504d-4e4b-9a80-cd9826047972`. The local metadata file `store/654/6549e8b3-d753-4447-8047-d462df6e6dbe/tmp_insert_all_1_1_0/checksums.txt` refers to remote path `rrr/kxo/tbnqtrghgtnxkzgtcrlutwuslgawe` in bucket `bucket1` on disk `disk_s3`, with a size of 259 bytes.
|
||
|
|
|
||
|
|
**See Also**
|
||
|
|
|
||
|
|
- [External Disks for Storing Data](../../operations/storing-data.md)
|