Allen Wittenauer
Senior SRE at The Apache Software Foundation
San Jose, California, United States
Summary
👤
Senior🎓
Top SchoolAllen Wittenauer is a Senior SRE based in San Jose with 25+ years of hands-on UNIX and distributed-systems experience and 11 years explicitly in SRE roles, known for bringing order to chaotic, high-density infrastructures. He designs and automates scalable infrastructure—everything from DNS, LDAP, ZFS and NFS to Hadoop/HDFS and Kafka—while shipping pragmatic tooling in C, Perl, and shell to make operations repeatable and reliable. A long-time Apache Hadoop committer and founding member of the Apache Yetus PMC, he has contributed usability and architectural improvements to Hadoop’s core and common modules. As owner of Effective Machines and a former Grid Computing Architect at LinkedIn, he blends deep operational insight with cloud-native migrations and cost-conscious rebuilds (e.g., Jenkins to spot-instance CI). He also contributes focused open-source fixes like AIFF support to Tinytag, showing attention to interoperability and real-world edge cases.
12 years of coding experience
16 years of employment as a software developer
Southern Illinois University, Carbondale
English
Stackoverflow
1reputation
0reached
1answer
0questions
Github Skills (25)
hadoop-mapreduce10
filesystem10
file-management10
python10
scripting10
testing10
metadata10
mapreduce10
filetype10
file-conversion10
hadoop10
file-operations10
java10
file-format10
javas10
Programming languages (12)
Github contributions (5)
apache/hadoop
Sep 2014 - Jan 2019
Apache Hadoop
Role in this project:
Backend Developer & System Architect
Backend Developer & System ArchitectContributions:255 commits, 7 PRs, 11 comments in 4 years 4 months
Contributions summary:Allen contributed to core system features by adding an option to disable file system check dots and including a human-readable option for the `fs -count` shell command, indicating a focus on improving usability and file system management. Further contributions include adding support for Java properties, which highlights involvement in the architectural aspects. Moreover, they've made improvements to the system by refining existing functionalities and addressing Javadoc inconsistencies.
apache-hadoophadoop
apache/hadoop-common
Jul 2014 - Aug 2014
Mirror of Apache Hadoop common
Role in this project:Back-end Developer
Back-end DeveloperContributions:51 commits in 1 month
Contributions summary:Allen contributed to the Hadoop common and MapReduce projects by implementing new features and fixing existing bugs. These contributions included adding an option to disable fsck dots and incorporating a human-readable option to the shell command 'fs -count'. The user also addressed documentation and spelling issues, ensuring the code's quality and improving the overall user experience. Additionally, they fixed dead links within the project's documentation.
apache-hadoophadoop
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