My name is Yubi Lee.
I work as a Data Engineer.

• email: eubnara@gmail.com
• github: https://github.com/eubnara
• linkedin: https://kr.linkedin.com/in/yubi-lee-40a158130

Open source contribution

Hadoop

• HDFS-17655: Cannot run HDFS balancer with BlockPlacementPolicyWithNodeGroup
• HADOOP-19319: configurationChangeMonitor is not properly set on HttpServer2
• HADOOP-18806: Document missing property (ipc.server.read.threadpool.size) in core-default.xml
• HADOOP-18666: A whitelist of endpoints to skip Kerberos authentication doesn’t work for ResourceManager and Job History Server
• HDFS-16883: fix duplicate field name in hdfs-default.xml
• HADOOP-18585: DataNode’s internal infoserver redirects with http scheme, not https when https enabled.
• HADOOP-18398: Prevent AvroRecord*.class from being included non-test jar
• HADOOP-18087: fix bugs when looking up record from upstream DNS servers.
  • When query A record which is chained by CNAME, YARN Registry DNS Server does not properly respond. Some CNAME records are missing.
• HADOOP-17861: improve YARN Registry DNS Server qps
• HDFS-13259: fix file preview bug in NameNode UI
• HDFS-13260: fix guide about HA with QJM

Apache HBase

• HBASE-28911: Automatic SSL keystore reloading for HttpServer
• HBASE-28816: The description of “hbase.superuser” is confusing
• HBASE-28294: Support to skip Kerberos authentication for metric endpoints

Apache Bigtop

• BIGTOP-3906: Wrapper script for hive sources wrong default file
• BIGTOP-3850: fix conflict when installing ranger-hdfs-plugin and ranger-yarn-plugin on the same machine

Apache Ambari

• AMBARI-26075: Wrong datanode pid file when security enabled and unprivileged port is used
• AMBARI-25891: Enhancements when regenerating keytabs and changing Kerberos configurations
• AMBARI-25797: Fail to add a component on the same machine with ambari-server of a new service with no kerberos identity when kerberos enabled
• AMBARI-25788: Ambari server keeps generating keytabs even with KerberosServerAction#OperationType.CREATE_MISSING option.
• AMBARI-25624: optimize creating kerberos keytab
  • branch-2.7: https://github.com/apache/ambari/pull/3353
  • trunk: https://github.com/apache/ambari/pull/3588
• AMBARI-25720: Support Apache Directory Server
• AMBARI-25719: Fix bug when enabling kerberos in Ambari 2.7.6
  • trunk: https://github.com/apache/ambari/pull/3589
• AMBARI-25619: improve “Prepare delete identities” process when deleting component in host in kerberized cluster
• AMBARI-25422: optimize loading the first page for Ambari UI
• AMBARI-25491: newline characters are ignored on custom property in Ambari Web editor

Apache Ranger

• RANGER-4887: Change default configuration values for column masking and row-level filtering on hive policy
• RANGER-4886: do not Html-escape for user, group and role name
• RANGER-4418: Upgrade hadoop version and use shaded hadoop client artifacts
• RANGER-4247: auditPolicyEvaluators should be set before logging it
• RANGER-4236: enhance Ranger JSON audit to HDFS by compressing as gzip
• RANGER-4068: fix error caused by missing dnsjava library
• RANGER-3924: fix unnecessary sync caused by incremeting timestamp value typo
• RANGER-3858: On dev-support, service creation and ranger-kafka-plugin setup are failed

Apache Spark

• SPARK-44976: Utils.getCurrentUserName should return the full principal name
• SPARK-40964: (TBD) Cannot run spark history server with shaded hadoop jar
• SPARK-40072: fix build failure when using make-distributions.sh

Apache Impala

• IMPALA-9170: close idle connections without an associated session
• IMPALA-13327: bin/bootstrap_toolchain.py always download hbase-2.6.0-hadoop3-bin.tar.gz when USE_APACHE_COMPONENTS=true
• IMPALA-13311: Hive3 INSERT failed by ClassNotFoundException: org.apache.tez.runtime.api.Event
  • https://gerrit.cloudera.org/#/c/21706/
• IMPALA-13023: support webserver ldap filter when using spnego
  • https://gerrit.cloudera.org/#/c/21339/
• IMPALA-10408: Support Apache components to build Apache Impala to reduce dependencies of CDH or CDP
  • https://gerrit.cloudera.org/#/c/18977/

Apache KUDU

• https://issues.apache.org/jira/browse/KUDU-3549: String gauge exposed in prometheus format

Cloudera HUE

• https://github.com/cloudera/hue/pull/1134 (not merged): fix bug in handling + character in filebrowser
• https://github.com/cloudera/hue/pull/1135: fix bug in substituting liboozie.remote_deployement_dir variable

Apache Zeppelin

• ZEPPELIN-5594: HDFS file id should be read as “long”, not “int”.

Apache Avro

• AVRO-3877: [doc] fix wrong configuration for avro-maven-plugin in java example

ETC

• Spring-shell
  • https://github.com/spring-projects/spring-shell/pull/432#issuecomment-1144522860: add a feature to terminate spring-shell with CTRL+D
• gotty-client
  • https://github.com/moul/gotty-client/pull/99: fix disconnection caused by not handling syscall.EINTR
  • fix basic auth. token base64 encoding
    • https://github.com/moul/gotty-client/pull/105
    • https://github.com/moul/gotty-client/pull/108
  • https://github.com/moul/gotty-client/pull/110: get password without revealing it
• react-native-cache
  • https://github.com/timfpark/react-native-cache/pull/25: add a feature to support cache expiration
• discovery-zookeeper
  • https://github.com/naver/discovery-zookeeper
  • elasticsearch plugin to discovery hosts in cluster based on information in znode of Zookeeper
• winstonjs
  • https://github.com/winstonjs/winston/pull/1559: fix confusing log message

Presentation

• TossBank SLASH24: Building a Hadoop cluster with open source
  • https://toss.im/slash-24/sessions/5
  • https://www.youtube.com/watch?v=4BcSVF4bLtU
• NAVER DEVIEW 2021: Large scale multi-tenant secure Hadoop cluster growth experience sharing
  • https://deview.kr/2021/sessions/459
  • https://deview.kr/data/deview/session/attach/10_%EC%B4%88%EB%8C%80%EC%9A%A9%EB%9F%89%20%EB%A9%80%ED%8B%B0%ED%85%8C%EB%84%8C%ED%8A%B8%20%EC%8B%9C%ED%81%90%EC%96%B4%20%ED%95%98%EB%91%A1%20%ED%81%B4%EB%9F%AC%EC%8A%A4%ED%84%B0%20%EC%84%B1%EC%9E%A5%ED%86%B5%20%EA%B2%BD%ED%97%98%EA%B8%B0.pdf
  • https://tv.naver.com/v/23650574
• NAVER DEVIEW 2017: Advanced Experiences in Multi-tenant Hadoop Cluster Operation
  • https://deview.kr/2017/schedule/193?lang=en
  • https://www.slideshare.net/deview/234-80881396
  • https://tv.naver.com/v/2297124