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Posted to dev@hive.apache.org by "Rajesh Balamohan (Jira)" <ji...@apache.org> on 2020/10/20 04:46:00 UTC

[jira] [Created] (HIVE-24289) RetryingMetaStoreClient should not retry connecting to HMS on genuine errors

Rajesh Balamohan created HIVE-24289:
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             Summary: RetryingMetaStoreClient should not retry connecting to HMS on genuine errors
                 Key: HIVE-24289
                 URL: https://issues.apache.org/jira/browse/HIVE-24289
             Project: Hive
          Issue Type: Improvement
            Reporter: Rajesh Balamohan


When there is genuine error from HMS, it should not be retried in RetryingMetaStoreClient. 

For e.g, following query would be retried multiple times (~20+ times) in HMS causing huge delay in processing, even though this constraint is available in HMS. 

It should just throw exception to client and stop retrying in such cases.

{noformat}
alter table web_sales add constraint tpcds_bin_partitioned_orc_10000_ws_s_hd foreign key  (ws_ship_hdemo_sk) references household_demographics (hd_demo_sk) disable novalidate rely;

org.apache.hadoop.hive.ql.metadata.HiveException: org.apache.thrift.TApplicationException: Internal error processing add_foreign_key
	at org.apache.hadoop.hive.ql.metadata.Hive.addForeignKey(Hive.java:5914)
..
...
Caused by: org.apache.thrift.TApplicationException: Internal error processing add_foreign_key
       at org.apache.thrift.TApplicationException.read(TApplicationException.java:111)
       at org.apache.thrift.TServiceClient.receiveBase(TServiceClient.java:79)
       at org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Client.recv_add_foreign_key(ThriftHiveMetastore.java:1872)
{noformat}

https://github.com/apache/hive/blob/master/standalone-metastore/metastore-common/src/main/java/org/apache/hadoop/hive/metastore/RetryingMetaStoreClient.java#L256

For e.g, if exception contains "Internal error processing ", it could stop retrying all over again.



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