SYS.COPY_ERRORS_HISTORY

The SYS.COPY_ERRORS_HISTORY table stores information about COPY INTO operations that were run with ON_ERROR set to continue and that rejected at least one record in a CSV or JSON file.

Syntax

SELECT * FROM SYS.COPY_ERRORS_HISTORY

note

Results display information only about COPY INTO operations that were initiated by the querying user.

Example Output

executed_at	job_id	table_name	user_name	base_snapshot_id	storage_location	file_path	file_state	records_loaded_count	records_rejected_count
2023-11-14 10:39:56.535	1aacb195-ca94-ec4c-2b01-ecddac81a900	"my-location"."test".my-folder.ice_tbl_types	user_1	8234571992740262000	"my-location"."test".my-folder.source-data.json."data/"	/test/my-folder/source-data/json/data/test.json	SKIPPED	0	1
2023-11-18 22:24:53.411	1aa6c65f-ff9f-d4c5-4625-c8489898e900	"my-location"."test".my-folder.ice_tbl_types	user_1	8234571992740262000	"my-location"."test".my-folder.source-data.csv."data/"	/test/my-folder/source-data/csv/data/test_2.csv	PARTIALLY_LOADED	8	1
2023-11-18 22:24:53.411	1aa6c65f-ff9f-d4c5-4625-c8489898e900	"my-location"."test".my-folder.ice_tbl_types	user_1	8234571992740262000	"my-location"."test".my-folder.source-data.csv."data/"	/test/my-folder/source-data/csv/data/test_4.csv	SKIPPED	0	1
2023-11-18 22:24:53.411	1aa6c65f-ff9f-d4c5-4625-c8489898e900	"my-location"."test".my-folder.ice_tbl_types	user_1	8234571992740262000	"my-location"."test".my-folder.source-data.csv."data/"	/test/my-folder/source-data/csv/data/test_0.csv	PARTIALLY_LOADED	8	1
2023-11-18 22:24:53.411	1aa6c65f-ff9f-d4c5-4625-c8489898e900	"my-location"."test".my-folder.ice_tbl_types	user_1	8234571992740262000	"my-location"."test".my-folder.source-data.csv."data/"	/test/my-folder/source-data/csv/data/test_3.csv	PARTIALLY_LOADED	8	1

Columns

Column name	Data Type	Description
executed_at	timestamptz	The timestamp in milliseconds when the current row was written to the system table.
job_id	string	The ID of the COPY INTO job.
table_name	string	The name of the target table for the COPY INTO job.
user_name	string	The user name of the user who executed the COPY INTO command.
base_snapshot_id	long	The id of the last snapshot of the target table before the result of the COPY INTO command was committed.
storage_location	string	The storage location that was specified in the COPY INTO command.
file_path	string	The path of the input file that contained one or more rejected records (if the file is a CSV file) or one rejected record (if the file is a JSON file).
file_state	string	The state of the file. Possible values: PARTIALLY_LOADED -- At least one record from the file has been loaded into the target table and at least one record was rejected. SKIPPED -- No records from the file have been loaded because none of them could be parsed.
records_loaded_count	long	The number of records loaded successfully from this file.
records_rejected_count	long	The number of records that could not be loaded due to errors within the file.

Depending on how often COPY INTO jobs with the "ON_ERROR 'continue'" option are executed, this system table can accumulate a substantial number of records. You can remove records by using these two support keys:

• dremio.system_iceberg_tables.record_lifespan_in_millis: Sets the number of days of history to retain in the system table. The default is seven days.

• dremio.system_iceberg_tables.housekeeping_thread_frequency_in_millis: Sets the frequency of the cleaner thread that removes records older than the number of days set by dremio.system_iceberg_tables.record_lifespan_in_millis. The default is once a day.