Currently, when you try to import large data from GoogleBigQuery via Google Cloud Storage, it fails to import and you see following error in exploratory.log file.
Error in read_tokens_(data, tokenizer, col_specs, col_names, locale_, : ignoring SIGPIPE signal
This is a known Exploratory Desktop issue and the fix will be included in next patch.
As a workaround, please add some where clause on SQL query to make import size smaller.
For example, if you try to import natality table, which is available under sample dataset of bigquery-public-data, you need to reduce the number to around 1 million rows for now.
https://bigquery.cloud.google.com/table/bigquery-public-data:samples.natality?pli=1