Parsed test spec with 2 sessions

starting permutation: s2_explain_update s1_begin s1_decompress s2_explain_update s1_commit s2_explain_update
compression_status
------------------
Compressed        

step s2_explain_update: 
    UPDATE sensor_data SET cpu = cpu + 1 WHERE cpu = 0.1111111;

step s1_begin: 
  BEGIN;

step s1_decompress: 
   SELECT count(*) FROM (SELECT decompress_chunk(i, if_compressed => true) FROM show_chunks('sensor_data') i) i;
   SELECT compression_status FROM chunk_compression_stats('sensor_data');

count
-----
    1

compression_status
------------------
Uncompressed      

step s2_explain_update: 
    UPDATE sensor_data SET cpu = cpu + 1 WHERE cpu = 0.1111111;
 <waiting ...>
step s1_commit: 
  COMMIT;

step s2_explain_update: <... completed>
step s2_explain_update: 
    UPDATE sensor_data SET cpu = cpu + 1 WHERE cpu = 0.1111111;

