there is a partition table containing json files when querying, an error is always reported Failed with exception java.io.IOException:org.apache.hadoop.hdfs.BlockMissingException: Could not obtain block: BP-32616997-172.16.0.195-1533624415828:blk_107...
using hue to connect hive, displays only external tables in the left column of the hue interface, but internal tables cannot be displayed, but all tables can be displayed using show tables. What is the cause of this problem? In addition, the table name d...
python pyhive through SSH tunnel connection hive, error content is: Could not start SASL: b Error in sasl_client_start (- 4) SASL (- 4): no mechanism available: Unable to find a callback: 2 ) ask for advice from sshtunnel import SSHTunnelForwarder f...
problem description hive is stuck or has no speed while executing mapreduce read the log hadoop resourcemanager reported an error 2018-07-17 19br 17br the environmental background of the problems and what methods you have tried set up a hadoop c...
recently read the presto source code, do not understand the role of projectNode? only knows that it is used for projection, which can be explained simply. ...
exposure meter: cid (user id) newsid (exposure News) Click list: cid (user id) newsid (Click News) want to check whether each news article has been clicked in the following form: cid newsid cid newsid 01 23456 01 23456 01 23457 null null HI...