Hive报错-Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient

Hive 运行show tables报错:

FAILED: SemanticException org.apache.hadoop.hive.ql.metadata.HiveException: java.lang.RuntimeException: 
Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient

解决方法：
1）

rm   metastore_db/*.lck

2） This could be an issue with the metastore like sachinjose described or a connection issue. Run hive console in debug mode like so: hive -hiveconf hive.root.logger=DEBUG,console Then execute a simple query like show tables; and see what happens.

ref：https://stackoverflow.com/questions/22711364/java-lang-runtimeexceptionunable-to-instantiate-org-apache-hadoop-hive-metastor

尝试：hive -hiveconf hive.root.logger=DEBUG,console

。。。略
2020-05-22T15:42:34,298  WARN [e5e799dc-4f76-4478-826b-e324102e29fd main] ql.Driver: Caught exception attempting to write metadata call information org.apache.hadoop.hive.ql.metadata.HiveException: java.lang.RuntimeException: 
Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient
org.apache.hadoop.hive.ql.metadata.HiveException: java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient
    at org.apache.hadoop.hive.ql.metadata.Hive.registerAllFunctionsOnce(Hive.java:236) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.ql.metadata.Hive.<init>(Hive.java:388) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.ql.metadata.Hive.create(Hive.java:332) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.ql.metadata.Hive.getInternal(Hive.java:312) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.ql.metadata.Hive.get(Hive.java:354) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.ql.metadata.Hive.get(Hive.java:350) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.ql.Driver.dumpMetaCallTimingWithoutEx(Driver.java:683) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:621) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.ql.Driver.compileInternal(Driver.java:1317) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1457) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1237) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1227) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:233) ~[hive-cli-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:184) ~[hive-cli-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:403) ~[hive-cli-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:821) ~[hive-cli-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:759) ~[hive-cli-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:686) ~[hive-cli-2.3.7.jar:2.3.7]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_241]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_241]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_241]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_241]
    at org.apache.hadoop.util.RunJar.run(RunJar.java:244) ~[hadoop-common-2.10.0.jar:?]
    at org.apache.hadoop.util.RunJar.main(RunJar.java:158) ~[hadoop-common-2.10.0.jar:?]
Caused by: java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient
    at org.apache.hadoop.hive.metastore.MetaStoreUtils.newInstance(MetaStoreUtils.java:1709) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.<init>(RetryingMetaStoreClient.java:83) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.getProxy(RetryingMetaStoreClient.java:133) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.getProxy(RetryingMetaStoreClient.java:104) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.ql.metadata.Hive.createMetaStoreClient(Hive.java:3600) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.ql.metadata.Hive.getMSC(Hive.java:3652) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.ql.metadata.Hive.getMSC(Hive.java:3632) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.ql.metadata.Hive.getAllFunctions(Hive.java:3894) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.ql.metadata.Hive.reloadFunctions(Hive.java:248) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.ql.metadata.Hive.registerAllFunctionsOnce(Hive.java:231) ~[hive-exec-2.3.7.jar:2.3.7]
    ... 23 more
Caused by: java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_241]
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[?:1.8.0_241]
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:1.8.0_241]
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[?:1.8.0_241]
    at org.apache.hadoop.hive.metastore.MetaStoreUtils.newInstance(MetaStoreUtils.java:1707) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.<init>(RetryingMetaStoreClient.java:83) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.getProxy(RetryingMetaStoreClient.java:133) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.getProxy(RetryingMetaStoreClient.java:104) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.ql.metadata.Hive.createMetaStoreClient(Hive.java:3600) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.ql.metadata.Hive.getMSC(Hive.java:3652) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.ql.metadata.Hive.getMSC(Hive.java:3632) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.ql.metadata.Hive.getAllFunctions(Hive.java:3894) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.ql.metadata.Hive.reloadFunctions(Hive.java:248) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.ql.metadata.Hive.registerAllFunctionsOnce(Hive.java:231) ~[hive-exec-2.3.7.jar:2.3.7]
    ... 23 more
Caused by: org.apache.hadoop.hive.metastore.api.MetaException: Could not connect to meta store using any of the URIs provided. Most recent failure: org.apache.thrift.transport.TTransportException: java.net.ConnectException: Connection refused (Connection refused)
    at org.apache.thrift.transport.TSocket.open(TSocket.java:226)
    at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.open(HiveMetaStoreClient.java:480)
    at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.<init>(HiveMetaStoreClient.java:247)
    at org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient.<init>(SessionHiveMetaStoreClient.java:70)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
    at org.apache.hadoop.hive.metastore.MetaStoreUtils.newInstance(MetaStoreUtils.java:1707)
    at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.<init>(RetryingMetaStoreClient.java:83)
    at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.getProxy(RetryingMetaStoreClient.java:133)
    at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.getProxy(RetryingMetaStoreClient.java:104)
    at org.apache.hadoop.hive.ql.metadata.Hive.createMetaStoreClient(Hive.java:3600)
    at org.apache.hadoop.hive.ql.metadata.Hive.getMSC(Hive.java:3652)
    at org.apache.hadoop.hive.ql.metadata.Hive.getMSC(Hive.java:3632)
    at org.apache.hadoop.hive.ql.metadata.Hive.getAllFunctions(Hive.java:3894)
    at org.apache.hadoop.hive.ql.metadata.Hive.reloadFunctions(Hive.java:248)
    at org.apache.hadoop.hive.ql.metadata.Hive.registerAllFunctionsOnce(Hive.java:231)
    at org.apache.hadoop.hive.ql.metadata.Hive.<init>(Hive.java:388)
    at org.apache.hadoop.hive.ql.metadata.Hive.create(Hive.java:332)
    at org.apache.hadoop.hive.ql.metadata.Hive.getInternal(Hive.java:312)
    at org.apache.hadoop.hive.ql.metadata.Hive.get(Hive.java:354)
    at org.apache.hadoop.hive.ql.metadata.Hive.get(Hive.java:350)
    at org.apache.hadoop.hive.ql.Driver.dumpMetaCallTimingWithoutEx(Driver.java:683)
    at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:621)
    at org.apache.hadoop.hive.ql.Driver.compileInternal(Driver.java:1317)
    at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1457)
    at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1237)
    at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1227)
    at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:233)
    at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:184)
    at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:403)
    at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:821)
    at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:759)
    at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:686)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.apache.hadoop.util.RunJar.run(RunJar.java:244)
    at org.apache.hadoop.util.RunJar.main(RunJar.java:158)
Caused by: java.net.ConnectException: Connection refused (Connection refused)
    at java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
    at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
    at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
    at java.net.Socket.connect(Socket.java:606)
    at org.apache.thrift.transport.TSocket.open(TSocket.java:221)
    ... 40 more

    at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.open(HiveMetaStoreClient.java:529) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.<init>(HiveMetaStoreClient.java:247) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient.<init>(SessionHiveMetaStoreClient.java:70) ~[hive-exec-2.3.7.jar:2.3.7]
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:1.8.0_241]
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[?:1.8.0_241]
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:1.8.0_241]
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[?:1.8.0_241]
    at org.apache.hadoop.hive.metastore.MetaStoreUtils.newInstance(MetaStoreUtils.java:1707) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.<init>(RetryingMetaStoreClient.java:83) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.getProxy(RetryingMetaStoreClient.java:133) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.getProxy(RetryingMetaStoreClient.java:104) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.ql.metadata.Hive.createMetaStoreClient(Hive.java:3600) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.ql.metadata.Hive.getMSC(Hive.java:3652) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.ql.metadata.Hive.getMSC(Hive.java:3632) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.ql.metadata.Hive.getAllFunctions(Hive.java:3894) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.ql.metadata.Hive.reloadFunctions(Hive.java:248) ~[hive-exec-2.3.7.jar:2.3.7]
    at org.apache.hadoop.hive.ql.metadata.Hive.registerAllFunctionsOnce(Hive.java:231) ~[hive-exec-2.3.7.jar:2.3.7]
    ... 23 more
2020-05-22T15:42:34,298  INFO [e5e799dc-4f76-4478-826b-e324102e29fd main] ql.Driver: Completed compiling command(queryId=root_20200522154231_614a8f79-1319-4f91-bd16-0ef9f7071dca); Time taken: 0.055 seconds

 kill hive进程，运行如下，试试。

 $ hive --service metastore


其他报错：

hive> show tables;
FAILED: SemanticException org.apache.hadoop.hive.ql.metadata.HiveException:

java.lang.RuntimeException:

Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient

解决：

  $ hive --service metastore