java.lang.NoSuchMethodError: java.lang.String.isBlank()Z error while running it from local

[malayt]

hi,

I followed all the steps mentioned in the readme and video. But not able to successfully test it, getting below error:
Exception in thread "main" java.lang.reflect.InvocationTargetException
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 com.intellij.rt.execution.CommandLineWrapper.main(CommandLineWrapper.java:64)
Caused by: java.lang.NoSuchMethodError: java.lang.String.isBlank()Z
at com.vertica.spark.util.schema.SchemaTools.findEmptyColumnName$1(SchemaTools.scala:681)
at com.vertica.spark.util.schema.SchemaTools.checkBlankColumnNames(SchemaTools.scala:691)
at com.vertica.spark.util.schema.SchemaTools.checkValidTableSchema(SchemaTools.scala:562)
at com.vertica.spark.util.table.TableUtils.buildCreateTableStmt(TableUtils.scala:124)
at com.vertica.spark.util.table.TableUtils.createTable(TableUtils.scala:252)
at com.vertica.spark.datasource.core.VerticaDistributedFilesystemWritePipe.$anonfun$doPreWriteSteps$13(VerticaDistributedFilesystemWritePipe.scala:141)
at scala.util.Either.flatMap(Either.scala:341)
at com.vertica.spark.datasource.core.VerticaDistributedFilesystemWritePipe.$anonfun$doPreWriteSteps$12(VerticaDistributedFilesystemWritePipe.scala:138)
at com.vertica.spark.datasource.core.VerticaDistributedFilesystemWritePipe.$anonfun$doPreWriteSteps$12$adapted(VerticaDistributedFilesystemWritePipe.scala:137)
at scala.util.Either.flatMap(Either.scala:341)
at com.vertica.spark.datasource.core.VerticaDistributedFilesystemWritePipe.$anonfun$doPreWriteSteps$11(VerticaDistributedFilesystemWritePipe.scala:137)
at scala.util.Either.flatMap(Either.scala:341)
at com.vertica.spark.datasource.core.VerticaDistributedFilesystemWritePipe.$anonfun$doPreWriteSteps$10(VerticaDistributedFilesystemWritePipe.scala:136)
at com.vertica.spark.datasource.core.VerticaDistributedFilesystemWritePipe.$anonfun$doPreWriteSteps$10$adapted(VerticaDistributedFilesystemWritePipe.scala:135)
at scala.util.Either.flatMap(Either.scala:341)
at com.vertica.spark.datasource.core.VerticaDistributedFilesystemWritePipe.$anonfun$doPreWriteSteps$9(VerticaDistributedFilesystemWritePipe.scala:135)
at scala.util.Either.flatMap(Either.scala:341)
at com.vertica.spark.datasource.core.VerticaDistributedFilesystemWritePipe.$anonfun$doPreWriteSteps$8(VerticaDistributedFilesystemWritePipe.scala:132)
at scala.util.Either.flatMap(Either.scala:341)
at com.vertica.spark.datasource.core.VerticaDistributedFilesystemWritePipe.$anonfun$doPreWriteSteps$7(VerticaDistributedFilesystemWritePipe.scala:129)
at com.vertica.spark.datasource.core.VerticaDistributedFilesystemWritePipe.$anonfun$doPreWriteSteps$7$adapted(VerticaDistributedFilesystemWritePipe.scala:126)
at scala.util.Either.flatMap(Either.scala:341)
at com.vertica.spark.datasource.core.VerticaDistributedFilesystemWritePipe.$anonfun$doPreWriteSteps$6(VerticaDistributedFilesystemWritePipe.scala:126)
at scala.util.Either.flatMap(Either.scala:341)
at com.vertica.spark.datasource.core.VerticaDistributedFilesystemWritePipe.$anonfun$doPreWriteSteps$5(VerticaDistributedFilesystemWritePipe.scala:123)
at scala.util.Either.flatMap(Either.scala:341)
at com.vertica.spark.datasource.core.VerticaDistributedFilesystemWritePipe.$anonfun$doPreWriteSteps$4(VerticaDistributedFilesystemWritePipe.scala:120)
at scala.util.Either.flatMap(Either.scala:341)
at com.vertica.spark.datasource.core.VerticaDistributedFilesystemWritePipe.$anonfun$doPreWriteSteps$3(VerticaDistributedFilesystemWritePipe.scala:117)
at scala.util.Either.flatMap(Either.scala:341)

[malayt]

After creating the table above error is not coming any more, but now getting below error:
23/11/23 13:22:42 INFO SparkContext: SparkContext already stopped.
23/11/23 13:22:42 INFO ShutdownHookManager: Shutdown hook called
com.vertica.spark.util.error.ConnectorException: Error in communication with filestore. Check the 'staging_fs_url' parameter.
Caused by: java.net.UnknownHostException: hdfs
at com.vertica.spark.util.error.ErrorHandling$.logAndThrowError(ErrorHandling.scala:78)
at com.vertica.spark.datasource.v2.VerticaBatchWrite.(VerticaDatasourceV2Write.scala:71)
at com.vertica.spark.datasource.v2.VerticaWriteBuilder.buildForBatch(VerticaDatasourceV2Write.scala:51)
at org.apache.spark.sql.connector.write.WriteBuilder$1.toBatch(WriteBuilder.java:44)
at org.apache.spark.sql.execution.datasources.v2.V2ExistingTableWriteExec.run(WriteToDataSourceV2Exec.scala:332)
at org.apache.spark.sql.execution.datasources.v2.V2ExistingTableWriteExec.run$(WriteToDataSourceV2Exec.scala:331)
at org.apache.spark.sql.execution.datasources.v2.AppendDataExec.run(WriteToDataSourceV2Exec.scala:244)
at org.apache.spark.sql.execution.datasources.v2.V2CommandExec.result$lzycompute(V2CommandExec.scala:43)
at org.apache.spark.sql.execution.datasources.v2.V2CommandExec.result(V2CommandExec.scala:43)
at org.apache.spark.sql.execution.datasources.v2.V2CommandExec.executeCollect(V2CommandExec.scala:49)
at org.apache.spark.sql.execution.QueryExecution$$anonfun$eagerlyExecuteCommands$1.$anonfun$applyOrElse$1(QueryExecution.scala:98)
at org.apache.spark.sql.execution.SQLExecution$.$anonfun$withNewExecutionId$6(SQLExecution.scala:109)

Also if I run SELECT HDFS_CLUSTER_CONFIG_CHECK (); command validation is failing

-- hdfs_cluster_config_check --

Hadoop Conf Path : [/etc/hadoop/conf]

[OK] HadoopConfDir verified on all nodes
Token Refresh Frequency (seconds) : [0]
HadoopFSBlockSizeBytes (MB) : [64]

[OK] Found [1] hadoop cluster configurations

------------- Cluster 1 -------------
Is DefaultFS : [true]
Nameservice : []
Namenodes : [hdfs:8020]
High Availability : [false]
RPC Encryption : [false]
Kerberos Authentication : [false]
HTTPS Only : [false]
[INFO] Unable to get a Libhdfs++ handle, using Webhdfs
[INFO] Checking connections to [hdfs:///]
vertica : [OK]
dbadmin : [OK]

[INFO] Checking connections to [http://hdfs:50070]
[ERROR] Could not find an active namenode via curl

[!] hdfs_cluster_config_check : [FAIL]