上传jar包到flink环境遇到的问题
1、运行命令：flink版本1.13.2
flink run -c com.zf.online_record_monitor.Monitor /home/flink/analysis-1.0.0.jar
2、遇到问题：NoClassDefFoundError ClassNotFoundException
检查flink lib底下的jar包是否齐全。
例如：你的pom文件中只有flink-connector-kafka_2.11。但是lib底下得放flink-connector-kafka_2.11和kafka-clients-2.4.1.jar.
根据报错信息进行排查
SLF4J: Found binding in [jar:file:/opt/flink-1.13.2/lib/log4j-slf4j-impl-2.12.1.jar!/org/slf4j/impl/StaticLoggerBinder.class] SLF4J: Found binding in [jar:file:/opt/hadoop-2.6.0-cdh5.4.4/share/hadoop/common/lib/slf4j-log4j12-1.7.5.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.apache.logging.slf4j.Log4jLoggerFactory] 2021-10-27 17:30:50,677 INFO org.apache.flink.yarn.cli.FlinkYarnSessionCli [] - Found Yarn properties file under /tmp/.yarn-properties-hadoop. 2021-10-27 17:30:50,677 INFO org.apache.flink.yarn.cli.FlinkYarnSessionCli [] - Found Yarn properties file under /tmp/.yarn-properties-hadoop. java.lang.NoClassDefFoundError: org/apache/kafka/common/serialization/ByteArrayDeserializer at org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumer.setDeserializer(FlinkKafkaConsumer.java:322) at org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumer.
2、遇到问题： The main method caused an error: Unable to instantiate java compiler
1、修改配置文件flink-conf.yaml添加。
classloader.resolve-order: parent-first如果有用到hive。2、注意hive的版本是否正确。3、lib下需要jar包：flink-shaded-hadoop-2-uber-2.6.5-10.0.jar
2、 The program finished with the following exception: org.apache.flink.client.program.ProgramInvocationException: The main method caused an error: Unable to instantiate java compiler at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:372) at org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:222) at org.apache.flink.client.ClientUtils.executeProgram(ClientUtils.java:114) at org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:812) at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:246) at org.apache.flink.client.cli.CliFrontend.parseAndRun(CliFrontend.java:1054) at org.apache.flink.client.cli.CliFrontend.lambda$main$10(CliFrontend.java:1132) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:422) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1671) at org.apache.flink.runtime.security.contexts.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41) at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1132) Caused by: java.lang.IllegalStateException: Unable to instantiate java compiler at org.apache.calcite.rel.metadata.JaninoRelMetadataProvider.compile(JaninoRelMetadataProvider.java:428) at org.apache.calcite.rel.metadata.JaninoRelMetadataProvider.load3(JaninoRelMetadataProvider.java:374) at org.apache.calcite.rel.metadata.JaninoRelMetadataProvider.lambda$static$0(JaninoRelMetadataProvider.java:109) at org.apache.flink.calcite.shaded.com.google.common.cache.CacheLoader$FunctionToCacheLoader.load(CacheLoader.java:165) at org.apache.flink.calcite.shaded.com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3529) at org.apache.flink.calcite.shaded.com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2278) at org.apache.flink.calcite.shaded.com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2155) at org.apache.flink.calcite.shaded.com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2045) at org.apache.flink.calcite.shaded.com.google.common.cache.LocalCache.get(LocalCache.java:3951) at org.apache.flink.calcite.shaded.com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3974) at org.apache.flink.calcite.shaded.com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:4958) at org.apache.calcite.rel.metadata.JaninoRelMetadataProvider.create(JaninoRelMetadataProvider.java:469) at org.apache.calcite.rel.metadata.JaninoRelMetadataProvider.revise(JaninoRelMetadataProvider.java:481) at org.apache.calcite.rel.metadata.RelMetadataQueryBase.revise(RelMetadataQueryBase.java:95) at org.apache.calcite.rel.metadata.RelMetadataQuery.getPulledUpPredicates(RelMetadataQuery.java:784) at org.apache.calcite.rel.rules.ReduceExpressionsRule$ProjectReduceExpressionsRule.onMatch(ReduceExpressionsRule.java:303) at org.apache.calcite.plan.AbstractRelOptPlanner.fireRule(AbstractRelOptPlanner.java:333) at org.apache.calcite.plan.hep.HepPlanner.applyRule(HepPlanner.java:542) at org.apache.calcite.plan.hep.HepPlanner.applyRules(HepPlanner.java:407) at org.apache.calcite.plan.hep.HepPlanner.executeInstruction(HepPlanner.java:243) at org.apache.calcite.plan.hep.HepInstruction$RuleInstance.execute(HepInstruction.java:127) at org.apache.calcite.plan.hep.HepPlanner.executeProgram(HepPlanner.java:202) at org.apache.calcite.plan.hep.HepPlanner.findBestExp(HepPlanner.java:189) at org.apache.flink.table.planner.plan.optimize.program.FlinkHepProgram.optimize(FlinkHepProgram.scala:69) at org.apache.flink.table.planner.plan.optimize.program.FlinkHepRuleSetProgram.optimize(FlinkHepRuleSetProgram.scala:87) at org.apache.flink.table.planner.plan.optimize.program.FlinkChainedProgram$$anonfun$optimize$1.apply(FlinkChainedProgram.scala:62) at org.apache.flink.table.planner.plan.optimize.program.FlinkChainedProgram$$anonfun$optimize$1.apply(FlinkChainedProgram.scala:58) at scala.collection.TraversableOnce$$anonfun$foldLeft$1.apply(TraversableOnce.scala:157) at scala.collection.TraversableOnce$$anonfun$foldLeft$1.apply(TraversableOnce.scala:157) at scala.collection.Iterator$class.foreach(Iterator.scala:891) at scala.collection.AbstractIterator.foreach(Iterator.scala:1334) at scala.collection.IterableLike$class.foreach(IterableLike.scala:72) at scala.collection.AbstractIterable.foreach(Iterable.scala:54) at scala.collection.TraversableOnce$class.foldLeft(TraversableOnce.scala:157) at scala.collection.AbstractTraversable.foldLeft(Traversable.scala:104) at org.apache.flink.table.planner.plan.optimize.program.FlinkChainedProgram.optimize(FlinkChainedProgram.scala:57) at org.apache.flink.table.planner.plan.optimize.StreamCommonSubGraphBasedOptimizer.optimizeTree(StreamCommonSubGraphBasedOptimizer.scala:163) at org.apache.flink.table.planner.plan.optimize.StreamCommonSubGraphBasedOptimizer.doOptimize(StreamCommonSubGraphBasedOptimizer.scala:79) at org.apache.flink.table.planner.plan.optimize.CommonSubGraphBasedOptimizer.optimize(CommonSubGraphBasedOptimizer.scala:77) at org.apache.flink.table.planner.delegation.PlannerBase.optimize(PlannerBase.scala:279) at org.apache.flink.table.planner.delegation.PlannerBase.translate(PlannerBase.scala:163) at org.apache.flink.table.api.internal.TableEnvironmentImpl.translate(TableEnvironmentImpl.java:1518) at org.apache.flink.table.api.internal.TableEnvironmentImpl.executeInternal(TableEnvironmentImpl.java:740) at org.apache.flink.table.api.internal.TableEnvironmentImpl.executeInternal(TableEnvironmentImpl.java:856) at org.apache.flink.table.api.internal.TableEnvironmentImpl.executeSql(TableEnvironmentImpl.java:730) at com.e6.da.online_record_monitor.Monitor.execSQL(Monitor.java:291) at com.e6.da.online_record_monitor.Monitor.main(Monitor.java:192) 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:355) ... 11 more Caused by: java.lang.ClassCastException: org.codehaus.janino.CompilerFactory cannot be cast to org.codehaus.commons.compiler.ICompilerFactory at org.codehaus.commons.compiler.CompilerFactoryFactory.getCompilerFactory(CompilerFactoryFactory.java:129) at org.codehaus.commons.compiler.CompilerFactoryFactory.getDefaultCompilerFactory(CompilerFactoryFactory.java:79) at org.apache.calcite.rel.metadata.JaninoRelMetadataProvider.compile(JaninoRelMetadataProvider.java:426) ... 62 more
遇到问题：程序运行正常， flink SQL 不往hive中写入数据。
1、检查程序中是否开启检查点
2、检查flink的配置文件flink-conf.yaml是否配置检查点路径。
state.checkpoints.dir: hdfs://host:port/flink/flink-checkpoints3、检查config.setCheckpointInterval(10000)设置的时间是否过长。
检查点与入hive的关系：
不开启检查点时。hdfs的表目录下会有.开头的文件，但是不能正常读取。
开启检查点时，将文件转换为可读的文件，这个时间可能会与设置的config.setCheckpointInterval(10000)时间有关。