[ 
https://issues.apache.org/jira/browse/HIVE-29213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18032906#comment-18032906
 ] 

Butao Zhang commented on HIVE-29213:
------------------------------------

{code:java}
is that a backward incompatibility issue? older beeline clients are unable to 
perform any SELECT operations?{code}
 

[~dkuzmenko] I think this is a backward incompatibility issue.  For older 
beeline clients(4.1.0), while they can perform SELECT query operations, the 
query latency is significantly higher compared to new beeline clients(4.2.0). 
For example, when executing a query like `SELECT * FROM table` using `FETCH 
TASK` (with `set hive.fetch.task.conversion=more`), the old client takes over 1 
second to return results, and error messages appear in the HS2 logs. In 
contrast, the new client only requires 0.1 seconds to return results. When 
using the old client, this creates a misconception for users that Hive is 
experiencing performance issues.

> HS2 report 'Failed to get primary keys' if using old beeline client
> -------------------------------------------------------------------
>
>                 Key: HIVE-29213
>                 URL: https://issues.apache.org/jira/browse/HIVE-29213
>             Project: Hive
>          Issue Type: Bug
>          Components: Beeline
>            Reporter: Butao Zhang
>            Priority: Critical
>
> HIVE-19996 fixed a performance issue related to beeline. However, this fix 
> causes a warning exception "Failed to get primary keys" to appear in the HS2 
> logs when using a beeline client that does not include this patch (such as 
> Hive 4.1.0) to submit SQL queries to Hive 4.2.0.
>  
> Here is a simple test procedure:
>  # Use the Hive 4.1.0 beeline client to connect to the latest version of Hive 
> 4.2.0 (which includes HIVE-19996).
> // Create a test table
> create table testdb.test12(id int);
> {color:#de350b}*// Query this table, and you will notice the following 
> exception: Failed to get primary keys ..*{color}
> select * from testdb.test12;
> {code:java}
> 2025-09-18T16:22:34,121 ERROR [HiveServer2-Handler-Pool: Thread-166] 
> thrift.ThriftCLIService: Failed to get primary keys [request: 
> TGetPrimaryKeysReq(sessionHandle:TSessionHandle(sessionId:THandleIdentifier(guid:56
>  22 37 10 00 2D 4B BB B6 FE 42 49 E2 25 75 1F, secret:C7 E6 BF 96 D1 82 4E F5 
> 82 36 AC A7 A1 3E 7A A6)), catalogName:, tableName:test12)]
> org.apache.hive.service.cli.HiveSQLException: 
> org.apache.thrift.protocol.TProtocolException: Required field 'db_name' is 
> unset! Struct:PrimaryKeysRequest(db_name:null, tbl_name:test12, catName:hive)
>         at 
> org.apache.hive.service.cli.operation.GetPrimaryKeysOperation.runInternal(GetPrimaryKeysOperation.java:120)
>  ~[hive-service-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hive.service.cli.operation.Operation.run(Operation.java:286) 
> ~[hive-service-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hive.service.cli.session.HiveSessionImpl.getPrimaryKeys(HiveSessionImpl.java:998)
>  ~[hive-service-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
>  ~[?:?]
>         at java.base/java.lang.reflect.Method.invoke(Method.java:580) ~[?:?]
>         at 
> org.apache.hive.service.cli.session.HiveSessionProxy.invoke(HiveSessionProxy.java:78)
>  ~[hive-service-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hive.service.cli.session.HiveSessionProxy$1.run(HiveSessionProxy.java:63)
>  ~[hive-service-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> java.base/java.security.AccessController.doPrivileged(AccessController.java:714)
>  ~[?:?]
>         at java.base/javax.security.auth.Subject.doAs(Subject.java:525) ~[?:?]
>         at 
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1953)
>  ~[hadoop-common-3.4.1.jar:?]
>         at 
> org.apache.hive.service.cli.session.HiveSessionProxy.invoke(HiveSessionProxy.java:59)
>  ~[hive-service-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at jdk.proxy2/jdk.proxy2.$Proxy41.getPrimaryKeys(Unknown Source) 
> ~[?:?]
>         at 
> org.apache.hive.service.cli.CLIService.getPrimaryKeys(CLIService.java:416) 
> ~[hive-service-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hive.service.cli.thrift.ThriftCLIService.GetPrimaryKeys(ThriftCLIService.java:919)
>  ~[hive-service-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hive.service.rpc.thrift.TCLIService$Processor$GetPrimaryKeys.getResult(TCLIService.java:1870)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hive.service.rpc.thrift.TCLIService$Processor$GetPrimaryKeys.getResult(TCLIService.java:1850)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:38) 
> ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:38) 
> ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hive.service.auth.TSetIpAddressProcessor.process(TSetIpAddressProcessor.java:56)
>  ~[hive-service-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.thrift.server.TThreadPoolServer$WorkerProcess.run(TThreadPoolServer.java:250)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
>  ~[?:?]
>         at 
> java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
>  ~[?:?]
>         at java.base/java.lang.Thread.run(Thread.java:1583) [?:?]
> Caused by: org.apache.thrift.protocol.TProtocolException: Required field 
> 'db_name' is unset! Struct:PrimaryKeysRequest(db_name:null, tbl_name:test12, 
> catName:hive)
>         at 
> org.apache.hadoop.hive.metastore.api.PrimaryKeysRequest.validate(PrimaryKeysRequest.java:591)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$get_primary_keys_args.validate(ThriftHiveMetastore.java)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$get_primary_keys_args$get_primary_keys_argsStandardScheme.write(ThriftHiveMetastore.java)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$get_primary_keys_args$get_primary_keys_argsStandardScheme.write(ThriftHiveMetastore.java)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$get_primary_keys_args.write(ThriftHiveMetastore.java)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at org.apache.thrift.TServiceClient.sendBase(TServiceClient.java:71) 
> ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at org.apache.thrift.TServiceClient.sendBase(TServiceClient.java:62) 
> ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Client.send_get_primary_keys(ThriftHiveMetastore.java:4926)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Client.get_primary_keys(ThriftHiveMetastore.java:4918)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hadoop.hive.metastore.client.ThriftHiveMetaStoreClient.getPrimaryKeys(ThriftHiveMetaStoreClient.java:2393)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hadoop.hive.metastore.client.MetaStoreClientWrapper.getPrimaryKeys(MetaStoreClientWrapper.java:1081)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT] {code}
> *{color:#de350b}// show  tables, then you will find new 
> exceptions:client.ThriftHiveMetaStoreClient: Got error flushing the cache 
> org.apache.thrift.TApplicationException: Unrecognized type -128{color}*
> show tables;
> {code:java}
> 2025-09-18T16:22:39,771  INFO [56223710-002d-4bbb-b6fe-4249e225751f 
> HiveServer2-Handler-Pool: Thread-166] ql.Driver: Compiling 
> command(queryId=hive_20250918162239_69ae0c6e-309f-4b87-a2c4-8093ae4700e8): 
> show tables
> 2025-09-18T16:22:39,771  WARN [56223710-002d-4bbb-b6fe-4249e225751f 
> HiveServer2-Handler-Pool: Thread-166] client.ThriftHiveMetaStoreClient: Got 
> error flushing the cache
> org.apache.thrift.TApplicationException: Unrecognized type -128
>         at 
> org.apache.thrift.TServiceClient.receiveBase(TServiceClient.java:79) 
> ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Client.recv_flushCache(ThriftHiveMetastore.java:7493)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Client.flushCache(ThriftHiveMetastore.java:7481)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hadoop.hive.metastore.client.ThriftHiveMetaStoreClient.flushCache(ThriftHiveMetaStoreClient.java:2541)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hadoop.hive.metastore.client.MetaStoreClientWrapper.flushCache(MetaStoreClientWrapper.java:1043)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hadoop.hive.metastore.client.MetaStoreClientWrapper.flushCache(MetaStoreClientWrapper.java:1043)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hadoop.hive.metastore.client.MetaStoreClientWrapper.flushCache(MetaStoreClientWrapper.java:1043)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
>  ~[?:?]
>         at java.base/java.lang.reflect.Method.invoke(Method.java:580) ~[?:?]
>         at 
> org.apache.hadoop.hive.metastore.client.SynchronizedMetaStoreClient$SynchronizedHandler.invoke(SynchronizedMetaStoreClient.java:69)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at jdk.proxy2/jdk.proxy2.$Proxy32.flushCache(Unknown Source) ~[?:?]
>         at 
> org.apache.hadoop.hive.metastore.client.MetaStoreClientWrapper.flushCache(MetaStoreClientWrapper.java:1043)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
>  ~[?:?]
>         at java.base/java.lang.reflect.Method.invoke(Method.java:580) ~[?:?]
>         at 
> org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.invoke(RetryingMetaStoreClient.java:232)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at jdk.proxy2/jdk.proxy2.$Proxy32.flushCache(Unknown Source) ~[?:?]
>         at org.apache.hadoop.hive.ql.Compiler.analyze(Compiler.java:198) 
> ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at org.apache.hadoop.hive.ql.Compiler.compile(Compiler.java:109) 
> ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:498) 
> ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at org.apache.hadoop.hive.ql.Driver.compileInternal(Driver.java:450) 
> ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hadoop.hive.ql.Driver.compileAndRespond(Driver.java:414) 
> ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hadoop.hive.ql.Driver.compileAndRespond(Driver.java:408) 
> ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hadoop.hive.ql.reexec.ReExecDriver.compileAndRespond(ReExecDriver.java:126)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hive.service.cli.operation.SQLOperation.prepare(SQLOperation.java:205)
>  ~[hive-service-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hive.service.cli.operation.SQLOperation.runInternal(SQLOperation.java:268)
>  ~[hive-service-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hive.service.cli.operation.Operation.run(Operation.java:286) 
> ~[hive-service-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hive.service.cli.session.HiveSessionImpl.executeStatementInternal(HiveSessionImpl.java:558)
>  ~[hive-service-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hive.service.cli.session.HiveSessionImpl.executeStatementAsync(HiveSessionImpl.java:543)
>  ~[hive-service-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
>  ~[?:?]
>         at java.base/java.lang.reflect.Method.invoke(Method.java:580) ~[?:?]
>         at 
> org.apache.hive.service.cli.session.HiveSessionProxy.invoke(HiveSessionProxy.java:78)
>  ~[hive-service-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hive.service.cli.session.HiveSessionProxy$1.run(HiveSessionProxy.java:63)
>  ~[hive-service-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> java.base/java.security.AccessController.doPrivileged(AccessController.java:714)
>  ~[?:?]
>         at java.base/javax.security.auth.Subject.doAs(Subject.java:525) ~[?:?]
>         at 
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1953)
>  ~[hadoop-common-3.4.1.jar:?]
>         at 
> org.apache.hive.service.cli.session.HiveSessionProxy.invoke(HiveSessionProxy.java:59)
>  ~[hive-service-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at jdk.proxy2/jdk.proxy2.$Proxy41.executeStatementAsync(Unknown 
> Source) ~[?:?]
>         at 
> org.apache.hive.service.cli.CLIService.executeStatementAsync(CLIService.java:315)
>  ~[hive-service-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hive.service.cli.thrift.ThriftCLIService.ExecuteStatement(ThriftCLIService.java:652)
>  ~[hive-service-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hive.service.rpc.thrift.TCLIService$Processor$ExecuteStatement.getResult(TCLIService.java:1670)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hive.service.rpc.thrift.TCLIService$Processor$ExecuteStatement.getResult(TCLIService.java:1650)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:38) 
> ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:38) 
> ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hive.service.auth.TSetIpAddressProcessor.process(TSetIpAddressProcessor.java:56)
>  ~[hive-service-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.thrift.server.TThreadPoolServer$WorkerProcess.run(TThreadPoolServer.java:250)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
>  ~[?:?]
>         at 
> java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
>  ~[?:?]
>         at java.base/java.lang.Thread.run(Thread.java:1583) [?:?]
> 2025-09-18T16:22:39,773  WARN [56223710-002d-4bbb-b6fe-4249e225751f 
> HiveServer2-Handler-Pool: Thread-166] metastore.RetryingMetaStoreClient: 
> MetaStoreClient lost connection. Attempting to reconnect (1 of 1) after 1s. 
> getDatabase
> org.apache.thrift.transport.TTransportException: Socket is closed by peer.
>         at 
> org.apache.thrift.transport.TIOStreamTransport.read(TIOStreamTransport.java:184)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.thrift.transport.TTransport.readAll(TTransport.java:109) 
> ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.thrift.protocol.TBinaryProtocol.readAll(TBinaryProtocol.java:464) 
> ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.thrift.protocol.TBinaryProtocol.readI32(TBinaryProtocol.java:362) 
> ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.thrift.protocol.TBinaryProtocol.readMessageBegin(TBinaryProtocol.java:245)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.thrift.TServiceClient.receiveBase(TServiceClient.java:77) 
> ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Client.recv_get_database_req(ThriftHiveMetastore.java:1497)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Client.get_database_req(ThriftHiveMetastore.java:1484)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hadoop.hive.metastore.client.ThriftHiveMetaStoreClient.getDatabase(ThriftHiveMetaStoreClient.java:1979)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hadoop.hive.metastore.client.MetaStoreClientWrapper.getDatabase(MetaStoreClientWrapper.java:211)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient.getDatabase(SessionHiveMetaStoreClient.java:2281)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> org.apache.hadoop.hive.metastore.client.MetaStoreClientWrapper.getDatabase(MetaStoreClientWrapper.java:211)
>  ~[hive-exec-4.2.0-SNAPSHOT.jar:4.2.0-SNAPSHOT]
>         at 
> java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
>  ~[?:?]
>  {code}
>  
>  
> {color:#172b4d}HIVE-19996 may have broken the backward compatibility of 
> beeline. Accessing Hive 4.2 through the Hive 4.1 beeline client should 
> theoretically not present compatibility issues. We need to ensure backward 
> compatibility as much as possible to provide users with a smooth 
> experience.{color}



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