Good morning all at Support,
Over the past 2 days I've been experiencing problems when trying to extract a small amount of data from the state_vectors_data4 table using the Impala shell.
This morning a tried the following query which worked fine.
select *, 'OXTED' as area_of_record FROM state_vectors_data4 where hour between 1635811200.0 and 1638489600.0 limit 10;
Then I tried the query:
select count(*), 'OXTED' as area_of_record FROM state_vectors_data4 where hour between 1635811200.0 and 1638489600.0 limit 10;
But this time I got the error message;
[hadoop-29:21000] > select count(*), 'OXTED' as area_of_record FROM state_vectors_data4 where hour between 1635811200.0 and 1638489600.0 limit 10;
ERROR: Disk I/O error: Failed to open HDFS file hdfs://nameservice1/user/opensky/tables_v4/state_vectors/hour=1637575200/part-r-00169-107c871c-f984-4aed-8055-e3b59690f5f0.snappy.parquet
Error(2): No such file or directory
Root cause: RemoteException: File does not exist: /user/opensky/tables_v4/state_vectors/hour=1637575200/part-r-00169-107c871c-f984-4aed-8055-
Is the possibly a sever disk space or memory issue?
Thanks very much.
Richard.