大数据在金融行业的应用与Hadoop核心技术

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"《Hadoop for Finance Essentials》是由Rajiv Tiwari撰写的一本关于在金融领域应用Hadoop技术的书籍,由Packt Publishing于2015年4月30日出版,共168页。书中的内容涵盖了大数据的基本概念、Hadoop架构及其在金融服务业的应用。" 本书详细探讨了大数据的三大特性——数据量(Volume)、数据速度(Velocity)和数据多样性(Variety),并讲述了大数据技术的历史、现状和未来发展趋势。在大数据领域,作者提到了各种存储解决方案,如NoSQL数据库,并介绍了资源管理、数据治理、批处理计算、实时计算以及数据集成工具等关键组件。此外,书中还涉及了机器学习和商业智能等领域,以及与大数据相关的就业机会。 Hadoop作为大数据处理的核心,其架构包括Hadoop分布式文件系统(HDFS)、MapReduce(包括V1和V2即YARN)。作者用通俗易懂的方式解释了这个“丛林”般的体系,展示了Hadoop如何帮助处理和分析海量数据。书中详细介绍了Hadoop生态系统中的各个组件,如HBase(分布式数据库)、Hive(数据仓库工具)、Pig(数据处理语言)、Zookeeper(集群协调服务)、Oozie(工作流调度器)、Flume(数据收集系统)和Sqoop(数据迁移工具)。 在金融服务业章节,本书讨论了大数据如何在这个行业中发挥重要作用。金融行业产生大量复杂数据,如交易记录、市场动态和客户行为,Hadoop可以帮助金融机构处理这些数据,进行风险评估、欺诈检测、市场趋势分析以及客户关系管理。通过Hadoop,金融机构可以提升决策效率,降低运营成本,同时增强对市场变化的敏锐度。 《Hadoop for Finance Essentials》是针对金融行业专业人士的一本实用指南,它不仅提供了对Hadoop技术的深入理解,还阐述了如何将这些技术应用于实际的金融业务场景,以实现大数据价值的最大化。无论是对大数据感兴趣的金融从业者,还是寻求在金融科技领域发展的专业人士,都能从这本书中受益匪浅。

org.apache.hadoop.hbase.DoNotRetryIOException: Unable to load configured region split policy 'org.apache.phoenix.schema.MetaDataSplitPolicy' for table 'SYSTEM.CATALOG' Set hbase.table.sanity.checks to false at conf or table descriptor if you want to bypass sanity checks at org.apache.hadoop.hbase.util.TableDescriptorChecker.warnOrThrowExceptionForFailure(TableDescriptorChecker.java:296) at org.apache.hadoop.hbase.util.TableDescriptorChecker.sanityCheck(TableDescriptorChecker.java:109) at org.apache.hadoop.hbase.master.HMaster.createTable(HMaster.java:2025) at org.apache.hadoop.hbase.master.MasterRpcServices.createTable(MasterRpcServices.java:657) at org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos$MasterService$2.callBlockingMethod(MasterProtos.java) at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:413) at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:133) at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:338) at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:318) org.apache.hadoop.hbase.DoNotRetryIOException: Unable to load configured region split policy 'org.apache.phoenix.schema.MetaDataSplitPolicy' for table 'SYSTEM.CATALOG' Set hbase.table.sanity.checks to false at conf or table descriptor if you want to bypass sanity checks at org.apache.hadoop.hbase.util.TableDescriptorChecker.warnOrThrowExceptionForFailure(TableDescriptorChecker.java:296) at org.apache.hadoop.hbase.util.TableDescriptorChecker.sanityCheck(TableDescriptorChecker.java:109) at org.apache.hadoop.hbase.master.HMaster.createTable(HMaster.java:2025) at org.apache.hadoop.hbase.master.MasterRpcServices.createTable(MasterRpcServices.java:657) at org.apache.hadoop.hbase.shaded.protobuf.generated.MasterProtos$MasterService$2.callBlockingMethod(MasterProtos.java) at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:413) at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:133) at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:338) at org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:318)

2023-07-14 上传

ALTER DATABASE test1 RENAME TO test2; NoViableAltException(254@[]) at org.apache.hadoop.hive.ql.parse.HiveParser.alterDatabaseStatementSuffix(HiveParser.java:9043) at org.apache.hadoop.hive.ql.parse.HiveParser.alterStatement(HiveParser.java:7647) at org.apache.hadoop.hive.ql.parse.HiveParser.ddlStatement(HiveParser.java:4337) at org.apache.hadoop.hive.ql.parse.HiveParser.execStatement(HiveParser.java:2494) at org.apache.hadoop.hive.ql.parse.HiveParser.statement(HiveParser.java:1420) at org.apache.hadoop.hive.ql.parse.ParseDriver.parse(ParseDriver.java:220) at org.apache.hadoop.hive.ql.parse.ParseUtils.parse(ParseUtils.java:74) at org.apache.hadoop.hive.ql.parse.ParseUtils.parse(ParseUtils.java:67) at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:616) at org.apache.hadoop.hive.ql.Driver.compileInternal(Driver.java:1826) at org.apache.hadoop.hive.ql.Driver.compileAndRespond(Driver.java:1773) at org.apache.hadoop.hive.ql.Driver.compileAndRespond(Driver.java:1768) at org.apache.hadoop.hive.ql.reexec.ReExecDriver.compileAndRespond(ReExecDriver.java:126) at org.apache.hadoop.hive.ql.reexec.ReExecDriver.run(ReExecDriver.java:214) at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:239) at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:188) at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:402) 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:683) 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:318) at org.apache.hadoop.util.RunJar.main(RunJar.java:232) FAILED: ParseException line 1:21 cannot recognize input near 'test1' 'RENAME' 'TO' in alter database statement

2023-05-24 上传

at org.apache.hadoop.ipc.Client.call(Client.java:1476) at org.apache.hadoop.ipc.Client.call(Client.java:1413) at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:229) at com.sun.proxy.$Proxy29.mkdirs(Unknown Source) at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.mkdirs(ClientNamenodeProtocolTranslatorPB.java:563) 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.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:191) at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102) at com.sun.proxy.$Proxy30.mkdirs(Unknown Source) at org.apache.hadoop.hdfs.DFSClient.primitiveMkdir(DFSClient.java:3014) at org.apache.hadoop.hdfs.DFSClient.mkdirs(DFSClient.java:2984) at org.apache.hadoop.hdfs.DistributedFileSystem$21.doCall(DistributedFileSystem.java:1047) at org.apache.hadoop.hdfs.DistributedFileSystem$21.doCall(DistributedFileSystem.java:1043) at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81) at org.apache.hadoop.hdfs.DistributedFileSystem.mkdirsInternal(DistributedFileSystem.java:1043) at org.apache.hadoop.hdfs.DistributedFileSystem.mkdirs(DistributedFileSystem.java:1036) at org.apache.hadoop.hive.ql.session.SessionState.createPath(SessionState.java:751) at org.apache.hadoop.hive.ql.session.SessionState.createSessionDirs(SessionState.java:674) at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:586)

2023-07-16 上传

Java对hdfs操作报如下错误,请问怎么解决?错误如下:Exception in thread "main" java.io.IOException: (null) entry in command string: null chmod 0700 I:\tmp\hadoop-22215\mapred\staging\222151620622033\.staging at org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:770) at org.apache.hadoop.util.Shell.execCommand(Shell.java:866) at org.apache.hadoop.util.Shell.execCommand(Shell.java:849) at org.apache.hadoop.fs.RawLocalFileSystem.setPermission(RawLocalFileSystem.java:733) at org.apache.hadoop.fs.RawLocalFileSystem.mkOneDirWithMode(RawLocalFileSystem.java:491) at org.apache.hadoop.fs.RawLocalFileSystem.mkdirsWithOptionalPermission(RawLocalFileSystem.java:532) at org.apache.hadoop.fs.RawLocalFileSystem.mkdirs(RawLocalFileSystem.java:509) at org.apache.hadoop.fs.FilterFileSystem.mkdirs(FilterFileSystem.java:305) at org.apache.hadoop.mapreduce.JobSubmissionFiles.getStagingDir(JobSubmissionFiles.java:133) at org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:144) at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1290) at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1287) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1698) at org.apache.hadoop.mapreduce.Job.submit(Job.java:1287) at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1308) at com.sl.maxTemperature.main(maxTemperature.java:41)

2023-04-23 上传