在Flink跑批量任务的时候遇到了好多问题，在这里给大家分享一下，同时也作为Mark记录。
问题一
如果搭建集群请保持Flink安装在每台机子目录位置一致，否则启动不了，或者关闭不了。
集群中的lib包一定要保持一致，否则容易引发序列化问题。
问题二
请保持每台主机的kerberos认证,否则容易出现下面这种情况
Setting HADOOP_CONF_DIR=/etc/hadoop/conf because no HADOOP_CONF_DIR was set.
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/bigdata/flink-1.6.0/lib/slf4j-log4j12-1.7.25.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/bigdata/flink-1.6.0/lib/slf4j-log4j12-1.7.7.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]
Starting execution of program
2018-08-14 22:26:48,840 WARN org.apache.hadoop.conf.Configuration - hdfs-site.xml:an attempt to override final parameter: dfs.datanode.data.dir; Ignoring.
2018-08-14 22:26:48,840 WARN org.apache.hadoop.conf.Configuration - hdfs-site.xml:an attempt to override final parameter: dfs.datanode.failed.volumes.tolerated; Ignoring.
2018-08-14 22:26:48,840 WARN org.apache.hadoop.conf.Configuration - hdfs-site.xml:an attempt to override final parameter: dfs.namenode.http-address; Ignoring.
2018-08-14 22:26:48,840 WARN org.apache.hadoop.conf.Configuration - hdfs-site.xml:an attempt to override final parameter: dfs.namenode.name.dir; Ignoring.
2018-08-14 22:26:48,840 WARN org.apache.hadoop.conf.Configuration - hdfs-site.xml:an attempt to override final parameter: dfs.webhdfs.enabled; Ignoring.
2018-08-14 22:26:48,844 WARN org.apache.hadoop.conf.Configuration - core-site.xml:an attempt to override final parameter: fs.defaultFS; Ignoring.
2018-08-14 22:26:48,930 INFO org.apache.hadoop.security.UserGroupInformation - Login successful for user hdfs-flink@dounine.com using keytab file /etc/security/keytabs/hdfs.headless.keytab
2018-08-14 22:26:49,052 WARN org.apache.hadoop.conf.Configuration - hdfs-site.xml:an attempt to override final parameter: dfs.datanode.data.dir; Ignoring.
2018-08-14 22:26:49,052 WARN org.apache.hadoop.conf.Configuration - hdfs-site.xml:an attempt to override final parameter: dfs.datanode.failed.volumes.tolerated; Ignoring.
2018-08-14 22:26:49,052 WARN org.apache.hadoop.conf.Configuration - hdfs-site.xml:an attempt to override final parameter: dfs.namenode.http-address; Ignoring.
2018-08-14 22:26:49,052 WARN org.apache.hadoop.conf.Configuration - hdfs-site.xml:an attempt to override final parameter: dfs.namenode.name.dir; Ignoring.
2018-08-14 22:26:49,052 WARN org.apache.hadoop.conf.Configuration - hdfs-site.xml:an attempt to override final parameter: dfs.webhdfs.enabled; Ignoring.
2018-08-14 22:26:49,054 WARN org.apache.hadoop.conf.Configuration - core-site.xml:an attempt to override final parameter: fs.defaultFS; Ignoring.
2018-08-14 22:26:49,346 WARN org.apache.hadoop.hdfs.BlockReaderLocal - The short-circuit local reads feature cannot be used because libhadoop cannot be loaded.
------------------------------------------------------------
The program finished with the following exception:
org.apache.flink.client.program.ProgramInvocationException: Job failed. (JobID: d9f605aebc798ab5f23145ff7de39b1f)
at org.apache.flink.client.program.rest.RestClusterClient.submitJob(RestClusterClient.java:267)
at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:486)
at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:474)
at org.apache.flink.client.program.ContextEnvironment.execute(ContextEnvironment.java:62)
at org.apache.flink.api.java.ExecutionEnvironment.execute(ExecutionEnvironment.java:816)
at org.apache.flink.api.java.DataSet.count(DataSet.java:398)
at com.dounine.flink.Hdfs.main(Hdfs.java:144)
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.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:529)
at org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:421)
at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:426)
at org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:804)
at org.apache.flink.client.cli.CliFrontend.runProgram(CliFrontend.java:280)
at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:215)
at org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:1044)
at org.apache.flink.client.cli.CliFrontend.lambda$main$11(CliFrontend.java:1120)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1556)
at org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41)
at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1120)
Caused by: java.io.IOException: Failed on local exception: java.io.IOException: javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt)]; Host Details : local host is: "storm3.demo.com/10.3.111.4"; destination host is: "storm5.demo.com":8020;
at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:764)
at org.apache.hadoop.ipc.Client.call(Client.java:1414)
at org.apache.hadoop.ipc.Client.call(Client.java:1363)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:206)
at com.sun.proxy.$Proxy16.getBlockLocations(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:190)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:103)
at com.sun.proxy.$Proxy16.getBlockLocations(Unknown Source)
at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getBlockLocations(ClientNamenodeProtocolTranslatorPB.java:219)
at org.apache.hadoop.hdfs.DFSClient.callGetBlockLocations(DFSClient.java:1142)
at org.apache.hadoop.hdfs.DFSClient.getLocatedBlocks(DFSClient.java:1132)
at org.apache.hadoop.hdfs.DFSClient.getLocatedBlocks(DFSClient.java:1122)
at org.apache.hadoop.hdfs.DFSInputStream.fetchLocatedBlocksAndGetLastBlockLength(DFSInputStream.java:264)
at org.apache.hadoop.hdfs.DFSInputStream.openInfo(DFSInputStream.java:231)
at org.apache.hadoop.hdfs.DFSInputStream.<init>(DFSInputStream.java:224)
at org.apache.hadoop.hdfs.DFSClient.open(DFSClient.java:1295)
at org.apache.hadoop.hdfs.DistributedFileSystem$3.doCall(DistributedFileSystem.java:300)
at org.apache.hadoop.hdfs.DistributedFileSystem$3.doCall(DistributedFileSystem.java:296)
at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
at org.apache.hadoop.hdfs.DistributedFileSystem.open(DistributedFileSystem.java:296)
at org.apache.hadoop.fs.FileSystem.open(FileSystem.java:764)
at org.apache.hadoop.mapreduce.lib.input.LineRecordReader.initialize(LineRecordReader.java:85)
at org.apache.flink.api.java.hadoop.mapreduce.HadoopInputFormatBase.open(HadoopInputFormatBase.java:187)
at org.apache.flink.api.java.hadoop.mapreduce.HadoopInputFormatBase.open(HadoopInputFormatBase.java:59)
at org.apache.flink.runtime.operators.DataSourceTask.invoke(DataSourceTask.java:170)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:711)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.io.IOException: javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt)]
at org.apache.hadoop.ipc.Client$Connection$1.run(Client.java:677)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1556)
at org.apache.hadoop.ipc.Client$Connection.handleSaslConnectionFailure(Client.java:640)
at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:724)
at org.apache.hadoop.ipc.Client$Connection.access$2800(Client.java:367)
at org.apache.hadoop.ipc.Client.getConnection(Client.java:1462)
at org.apache.hadoop.ipc.Client.call(Client.java:1381)
... 29 more
Caused by: javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt)]
at com.sun.security.sasl.gsskerb.GssKrb5Client.evaluateChallenge(GssKrb5Client.java:211)
at org.apache.hadoop.security.SaslRpcClient.saslConnect(SaslRpcClient.java:411)
at org.apache.hadoop.ipc.Client$Connection.setupSaslConnection(Client.java:550)
at org.apache.hadoop.ipc.Client$Connection.access$1800(Client.java:367)
at org.apache.hadoop.ipc.Client$Connection$2.run(Client.java:716)
at org.apache.hadoop.ipc.Client$Connection$2.run(Client.java:712)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1556)
at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:711)
... 32 more
Caused by: GSSException: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt)
at sun.security.jgss.krb5.Krb5InitCredential.getInstance(Krb5InitCredential.java:147)
at sun.security.jgss.krb5.Krb5MechFactory.getCredentialElement(Krb5MechFactory.java:122)
at sun.security.jgss.krb5.Krb5MechFactory.getMechanismContext(Krb5MechFactory.java:187)
at sun.security.jgss.GSSManagerImpl.getMechanismContext(GSSManagerImpl.java:224)
at sun.security.jgss.GSSContextImpl.initSecContext(GSSContextImpl.java:212)
at sun.security.jgss.GSSContextImpl.initSecContext(GSSContextImpl.java:179)
at com.sun.security.sasl.gsskerb.GssKrb5Client.evaluateChallenge(GssKrb5Client.java:192)
... 41 more
解决方案
添加定时任务认证kerberos
crontab -e
添加如下任务并保存
0 */1 * * * kinit -kt /etc/security/keytabs/admin.keytab admin/admin
