title: Can reads occur whilst executing a bulk \copy batch of inserts
body: <p>I plan to be batch inserting a large volume of rows into a Postgres table using the <code>\copy</code> command once per minute. My benchmarks show I should be able to insert about 40k rows per second, and I plan to do this for 3 or 4 seconds each minute.</p>
  <p>Are read queries on the table blocked or impacted whilst the <code>\copy</code> dump is occurring? And I wonder the same for inserts as well?</p>
  <p>I'm assuming as well that tables which aren't being <code>\copy</code>'d into will face no blocking issues.</p>