java | Softchief Learn

JenkinsFile – the trustAnchors parameter must be non-empty

October 23, 2018

Error : java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty This is the problem I have faced when running build or test command on any java project. The following is the error I got, + make test ./gradlew test Downloading https://services.gradle.org/distributions/gradle-3.3-all.zip Exception in thread “main” javax.net.ssl.SSLException: java.lang.RuntimeException: Unexpected error: java.security.InvalidAlgorithmParameterException: the trustAnchors parameter must be non-empty…
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Solved : Failed to replace a bad datanode on the existing pipeline due to no more good datanodes being available to try

July 9, 2018

Caused by: java.io.IOException: Failed to replace a bad datanode on the existing pipeline due to no more good datanodes being available to try. (Nodes: current=[DatanodeInfoWithStorage[172.27.10.191:50010,DS-51d68378-35de-4c70-b27e-7a98a53919cc,DISK], DatanodeInfoWithStorage[172.27.10.223:50010,DS-f172c682-713d-4a8f-b8af-69198ddc6756,DISK]], original=[DatanodeInfoWithStorage[172.27.10.191:50010,DS-51d68378-35de-4c70-b27e-7a98a53919cc,DISK], DatanodeInfoWithStorage[172.27.10.223:50010,DS-f172c682-713d-4a8f-b8af-69198ddc6756,DISK]]). The current failed datanode replacement policy is DEFAULT, and a client may configure this via ‘dfs.client.block.write.replace-datanode-on-failure.policy’ in its configuration. at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.findNewDatanode(DFSOutputStream.java:925) at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.addDatanode2ExistingPipeline(DFSOutputStream.java:988) at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.setupPipelineForAppendOrRecovery(DFSOutputStream.java:1156) at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:454)…
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Hive : Unable to start metastore issue

January 4, 2018

Exception : smartechie:confluent-3.3.0 sudhir.pradhan$ hive SLF4J: Class path contains multiple SLF4J bindings.SLF4J: Found binding in [jar:file:/usr/local/Cellar/hive/2.1.0/libexec/lib/log4j-slf4j-impl-2.4.1.jar!/org/slf4j/impl/StaticLoggerBinder.class]SLF4J: Found binding in [jar:file:/usr/local/Cellar/hadoop/2.8.0/libexec/share/hadoop/common/lib/slf4j-log4j12-1.7.10.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] Logging initialized using configuration in jar:file:/usr/local/Cellar/hive/2.1.0/libexec/lib/hive-common-2.1.0.jar!/hive-log4j2.properties Async: trueException in thread “main” java.lang.RuntimeException: 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.session.SessionState.start(SessionState.java:578) at org.apache.hadoop.hive.ql.session.SessionState.beginStart(SessionState.java:518) at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:705)…
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Hive: Unable to instantiate Metastore

January 4, 2018

Exception : 2017-12-28T15:05:52,943 INFO [main] org.apache.hadoop.hive.metastore.HiveMetaStore – 0: Opening raw store with implementation class:org.apache.hadoop.hive.metastore.ObjectStore2017-12-28T15:05:52,943 INFO [main] org.apache.hadoop.hive.metastore.HiveMetaStore – 0: Opening raw store with implementation class:org.apache.hadoop.hive.metastore.ObjectStoreMetaException(message:Version information not found in metastore. ) at org.apache.hadoop.hive.metastore.RetryingHMSHandler.<init>(RetryingHMSHandler.java:83) at org.apache.hadoop.hive.metastore.RetryingHMSHandler.getProxy(RetryingHMSHandler.java:92) at org.apache.hadoop.hive.metastore.HiveMetaStore.newRetryingHMSHandler(HiveMetaStore.java:6883) at org.apache.hadoop.hive.metastore.HiveMetaStore.newRetryingHMSHandler(HiveMetaStore.java:6878) at org.apache.hadoop.hive.metastore.HiveMetaStore.startMetaStore(HiveMetaStore.java:7136) at org.apache.hadoop.hive.metastore.HiveMetaStore.main(HiveMetaStore.java:7063) 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:234) at…
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Install/upgrage Java 8 using Yum on EC2 instance (Amazon Linux AMI)

November 7, 2017

Step-1: Install Java Runtime – java 1.8 sudo yum install java-1.8.0 if you need a java compiler and other developer tools: sudo yum install java-1.8.0-openjdk-devel Step-2: If you have multiple versions and one of those default , use the alternatives command as follows and enter the selection number as guided in the terminal. sudo /usr/sbin/alternatives –config…
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Step By Step : Build and Run Kafka in Eclipse IDE + [ Scala || Java ] + Gradle

September 10, 2017

As a coder, we are more comfortable with the editor tools (specially Eclipse IDE) for rapid development , build & continuous integration. When first time I was trying to develop some Kafka producer and consumer using Scala, I was wondering if I could setup the same through eclipse to make life easier, however after a…
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