title: Transfer and write Parquet with python and pandas got timestamp error
body: <p>I tried to concat() two parquet file with pandas in python .<br>
  It can work , but when I try to write and save  the Data frame to a parquet file ,it display the error : </p>
  
  <pre><code> ArrowInvalid: Casting from timestamp[ns] to timestamp[ms] would lose data:
  </code></pre>
  
  <p>I checked the doc. of pandas, it default the timestamp syntax in ms when write the parquet file.<br>
  How can I white the parquet file with used schema after concat?<br>
  Here is my code:</p>
  
  <pre><code>import pandas as pd
  
  table1 = pd.read_parquet(path= ('path.parquet'),engine='pyarrow')
  table2 = pd.read_parquet(path= ('path.parquet'),engine='pyarrow')
  
  table = pd.concat([table1, table2], ignore_index=True) 
  table.to_parquet('./file.gzip', compression='gzip')
  </code></pre>