arenadata/SSM
Sep 2024 – Jan 2026
13 Months active
Languages Used
JavaShellJavaScriptSQLjavayamlTypeScriptYAML
Technical Skills
JavaSpringbackend developmentmetrics monitoringAPI DesignBackend Development
Tigran Manasyan
PROFILE
Tigran Manasyan
Over thirteen months, contributed to arenadata/SSM by building and enhancing distributed data management features, focusing on reliability, observability, and deployment efficiency. Delivered solutions such as dynamic configuration reloads, resilient Master-Agent connections, and case-insensitive global search, while improving Hive Metastore event handling and multi-cluster data workflows. Applied Java, Docker, and SQL to refactor core components, implement robust API integrations, and streamline test infrastructure for CI stability. Addressed concurrency, error handling, and configuration management challenges through targeted refactoring and feature development, resulting in reduced operational risk, faster troubleshooting, and improved maintainability across the arenadata/SSM backend and deployment pipelines.
Overall Statistics
Feature vs Bugs
77%Features
Repository Contributions
49Total
Bugs
7
Commits
49
Features
23
Lines of code
20,479
Activity Months13
Your Network
46 peopleSame Organization
@arenadata.io39
Shared Repositories
7
Work History
January 2026
8 Commits • 1 Features
Jan 1, 2026Month 2026-01 summary for arenadata/SSM: Key stability and accuracy improvements in Hive Metastore with robustness fixes, improved NULL handling and query ordering, and enhanced HMS-related features for partition management, URIs, and event tracking. These changes reduce runtime errors, improve test reliability, and strengthen data integrity and traceability across Hive Metastore operations.
8 Commits • 1 Features
Jan 1, 2026Month 2026-01 summary for arenadata/SSM: Key stability and accuracy improvements in Hive Metastore with robustness fixes, improved NULL handling and query ordering, and enhanced HMS-related features for partition management, URIs, and event tracking. These changes reduce runtime errors, improve test reliability, and strengthen data integrity and traceability across Hive Metastore operations.
January 2026
November 2025
4 Commits • 3 Features
Nov 1, 2025November 2025 monthly summary for arenadata/SSM focusing on delivering reliable HMS event processing, scalable statistics replication, and targeted filtering to improve data quality and operational efficiency.
November 2025
4 Commits • 3 Features
Nov 1, 2025November 2025 monthly summary for arenadata/SSM focusing on delivering reliable HMS event processing, scalable statistics replication, and targeted filtering to improve data quality and operational efficiency.
October 2025
1 Commits • 1 Features
Oct 1, 2025October 2025 monthly performance for arenadata/SSM: Delivered resilient Master-Agent connections and unified status messaging to increase reliability and observability across the distributed control plane. The work focused on refactoring MasterActor and related components to improve connection management, adding configurable timeouts and retry intervals for agent-master connections, and standardizing status updates via a StatusMessageHandler interface for consistent handling across executor services. A critical bug fix in MasterActor was implemented as part of [ADH-6995], significantly reducing transient failures. Overall impact: higher reliability, lower MTTR, improved monitoring, and smoother deployments.
1 Commits • 1 Features
Oct 1, 2025October 2025 monthly performance for arenadata/SSM: Delivered resilient Master-Agent connections and unified status messaging to increase reliability and observability across the distributed control plane. The work focused on refactoring MasterActor and related components to improve connection management, adding configurable timeouts and retry intervals for agent-master connections, and standardizing status updates via a StatusMessageHandler interface for consistent handling across executor services. A critical bug fix in MasterActor was implemented as part of [ADH-6995], significantly reducing transient failures. Overall impact: higher reliability, lower MTTR, improved monitoring, and smoother deployments.
October 2025
September 2025
1 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for arenadata/SSM: Delivered a feature enhancement that strengthens DistCp integration across multi-cluster environments, coupled with improved test coverage and refactoring for maintainability. Focus was on eliminating internal argument leakage and ensuring only relevant DistCp arguments reach the underlying command, reducing risk of failures in multi-cluster workflows.
September 2025
1 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for arenadata/SSM: Delivered a feature enhancement that strengthens DistCp integration across multi-cluster environments, coupled with improved test coverage and refactoring for maintainability. Focus was on eliminating internal argument leakage and ensuring only relevant DistCp arguments reach the underlying command, reducing risk of failures in multi-cluster workflows.
August 2025
2 Commits • 1 Features
Aug 1, 2025In August 2025, the focus was on stabilizing and improving the SSM test infrastructure. Delivered ephemeral port allocation for integration tests, removing bespoke free-port logic and relying on the OS to assign available ports (port 0). Implemented associated fixes to free-port handling at the SSM server level, addressing ADH-6442. These changes reduced test flakiness, improved CI reliability, and accelerated feedback for developers working on arenadata/SSM.
2 Commits • 1 Features
Aug 1, 2025In August 2025, the focus was on stabilizing and improving the SSM test infrastructure. Delivered ephemeral port allocation for integration tests, removing bespoke free-port logic and relying on the OS to assign available ports (port 0). Implemented associated fixes to free-port handling at the SSM server level, addressing ADH-6442. These changes reduced test flakiness, improved CI reliability, and accelerated feedback for developers working on arenadata/SSM.
August 2025
July 2025
2 Commits
Jul 1, 2025Month: 2025-07. Focused on stabilizing core data access features and improving reliability of admin cmdlets in arenadata/SSM. Delivered targeted bug fixes to align sorting semantics with the database and enhanced async command handling, resulting in more predictable behavior in production workflows. Test stability improvements were implemented by increasing timeouts and re-enabling previously flaky tests, reducing operator toil and enabling faster feedback loops for future changes.
July 2025
2 Commits
Jul 1, 2025Month: 2025-07. Focused on stabilizing core data access features and improving reliability of admin cmdlets in arenadata/SSM. Delivered targeted bug fixes to align sorting semantics with the database and enhanced async command handling, resulting in more predictable behavior in production workflows. Test stability improvements were implemented by increasing timeouts and re-enabling previously flaky tests, reducing operator toil and enabling faster feedback loops for future changes.
June 2025
2 Commits • 2 Features
Jun 1, 2025Month: 2025-06 – Focused on delivering scalable search and configurable execution for SSM/SDM to improve data discovery and resource utilization. Key features delivered: - Case-Insensitive Global Search Across DAOs: introduced a likeCaseInsensitive method and updated existing like operations to leverage it, enabling case-insensitive search across multiple DAO implementations. Commit: bfc65f1e92fea102137eeea30ca3ae9868408335 ([ADH-6071] Make search of several columns case-insensitive (#158)). - Per-Node Configurable Cmdlet Executors in SDM: adds capability to configure the number of cmdlet executors per node; refactors agent registration and node management to support dynamic executor counts; includes Hazelcast configuration and event handling updates. Commit: 4f70c0938a3e0d0303c08e353d72033053b889b0 ([ADH-6152] Support setting the number of cmdlet executors for specific node (#161)). Major bugs fixed: None documented this month.
2 Commits • 2 Features
Jun 1, 2025Month: 2025-06 – Focused on delivering scalable search and configurable execution for SSM/SDM to improve data discovery and resource utilization. Key features delivered: - Case-Insensitive Global Search Across DAOs: introduced a likeCaseInsensitive method and updated existing like operations to leverage it, enabling case-insensitive search across multiple DAO implementations. Commit: bfc65f1e92fea102137eeea30ca3ae9868408335 ([ADH-6071] Make search of several columns case-insensitive (#158)). - Per-Node Configurable Cmdlet Executors in SDM: adds capability to configure the number of cmdlet executors per node; refactors agent registration and node management to support dynamic executor counts; includes Hazelcast configuration and event handling updates. Commit: 4f70c0938a3e0d0303c08e353d72033053b889b0 ([ADH-6152] Support setting the number of cmdlet executors for specific node (#161)). Major bugs fixed: None documented this month.
June 2025
April 2025
1 Commits • 1 Features
Apr 1, 2025April 2025 monthly summary for arenadata/SSM focused on delivering a Dockerized HDFS client and robust versioning to improve deployment reliability across environments. The work enables stable startup with correct SSM HDFS client version and reduces drift between development, staging, and production.
April 2025
1 Commits • 1 Features
Apr 1, 2025April 2025 monthly summary for arenadata/SSM focused on delivering a Dockerized HDFS client and robust versioning to improve deployment reliability across environments. The work enables stable startup with correct SSM HDFS client version and reduces drift between development, staging, and production.
January 2025
4 Commits • 4 Features
Jan 1, 2025January 2025: Focused on reliability, observability, and capability enhancements for Arenadata SSM. Delivered four core features across DB/schema, API, and workflow orchestration, along with structural improvements to support future scalability. The changes emphasize business value through improved uptime, faster incident response, and enhanced auditing.
4 Commits • 4 Features
Jan 1, 2025January 2025: Focused on reliability, observability, and capability enhancements for Arenadata SSM. Delivered four core features across DB/schema, API, and workflow orchestration, along with structural improvements to support future scalability. The changes emphasize business value through improved uptime, faster incident response, and enhanced auditing.
January 2025
December 2024
3 Commits • 2 Features
Dec 1, 2024December 2024 monthly summary for arenadata/SSM focusing on key deliverables, bug fixes, and impact. Key features delivered: - Dynamic configuration reload via a shared volume: Moves config files to a shared volume to enable runtime reloading without rebuilding the Docker image, reducing deployment cycles and downtime. Commit: 5e4929ddf574ff507f7fea0d8e871be8cffb6ffe (ADH-4929). - Debugging support for SSM Master and Agent in Docker: Adds --debugMaster and --debugAgent flags (start-demo.sh propagates to start-ssm.sh) and exposes debug ports in Docker Compose for Master and Agent, accelerating troubleshooting in containerized environments. Commit: 2161fb950ccb0889504fcff55c8838f818d83cf1 (ADH-4929). Major bugs fixed: - Remove unused SmartConf option: smart.action.copy.truncate.wait.ms. Eliminates dead code and misconfiguration risk; the default is now defined directly in CopyFileAction.java. Commit: b97a8281ee19ca02f0832e8ae770db48935867a6 (ADH-5385). Overall impact and accomplishments: - Improved operational agility and uptime with live configuration updates and enhanced debugging capabilities, leading to faster issue resolution and fewer deployment bottlenecks. - Code quality improved through removal of unused configuration options, reducing maintenance risk and potential misconfigurations. Technologies/skills demonstrated: - Docker, Docker Compose, and containerized debugging workflows. - Runtime configuration management and live reload patterns. - Java-based code cleanup (CopyFileAction) and feature-flag-driven debugging hooks. - Traceability through commit-level changes (ADH-4929, ADH-5385). Business value: - Shorter deployment cycles, faster incident response, and lower risk in production environments for the arenadata/SSM project.
December 2024
3 Commits • 2 Features
Dec 1, 2024December 2024 monthly summary for arenadata/SSM focusing on key deliverables, bug fixes, and impact. Key features delivered: - Dynamic configuration reload via a shared volume: Moves config files to a shared volume to enable runtime reloading without rebuilding the Docker image, reducing deployment cycles and downtime. Commit: 5e4929ddf574ff507f7fea0d8e871be8cffb6ffe (ADH-4929). - Debugging support for SSM Master and Agent in Docker: Adds --debugMaster and --debugAgent flags (start-demo.sh propagates to start-ssm.sh) and exposes debug ports in Docker Compose for Master and Agent, accelerating troubleshooting in containerized environments. Commit: 2161fb950ccb0889504fcff55c8838f818d83cf1 (ADH-4929). Major bugs fixed: - Remove unused SmartConf option: smart.action.copy.truncate.wait.ms. Eliminates dead code and misconfiguration risk; the default is now defined directly in CopyFileAction.java. Commit: b97a8281ee19ca02f0832e8ae770db48935867a6 (ADH-5385). Overall impact and accomplishments: - Improved operational agility and uptime with live configuration updates and enhanced debugging capabilities, leading to faster issue resolution and fewer deployment bottlenecks. - Code quality improved through removal of unused configuration options, reducing maintenance risk and potential misconfigurations. Technologies/skills demonstrated: - Docker, Docker Compose, and containerized debugging workflows. - Runtime configuration management and live reload patterns. - Java-based code cleanup (CopyFileAction) and feature-flag-driven debugging hooks. - Traceability through commit-level changes (ADH-4929, ADH-5385). Business value: - Shorter deployment cycles, faster incident response, and lower risk in production environments for the arenadata/SSM project.
November 2024
11 Commits • 2 Features
Nov 1, 2024Month: November 2024 — Arenadata/SSM. Focused on reliability, deployment, and test stability across the copy/sync workflow. Key features delivered include: Copy and synchronization reliability enhancements with rename handling, FIFO scheduling, truncation wait, forced full-copy where appends are not supported, plus enhanced diff tracking and error handling. Deployment and Observability enhancements include refreshed Docker demo/SSM configuration and expanded actuator endpoints with health exposure. Test infrastructure improvements stabilized tests for copy, compression, and metadata handling, boosting CI reliability. Overall impact: reduced data loss risk, faster troubleshooting, and smoother feature rollouts. Technologies demonstrated include Java/Spring actuator endpoints, Docker-based deployment, and advanced scheduling/file-diff logic.
11 Commits • 2 Features
Nov 1, 2024Month: November 2024 — Arenadata/SSM. Focused on reliability, deployment, and test stability across the copy/sync workflow. Key features delivered include: Copy and synchronization reliability enhancements with rename handling, FIFO scheduling, truncation wait, forced full-copy where appends are not supported, plus enhanced diff tracking and error handling. Deployment and Observability enhancements include refreshed Docker demo/SSM configuration and expanded actuator endpoints with health exposure. Test infrastructure improvements stabilized tests for copy, compression, and metadata handling, boosting CI reliability. Overall impact: reduced data loss risk, faster troubleshooting, and smoother feature rollouts. Technologies demonstrated include Java/Spring actuator endpoints, Docker-based deployment, and advanced scheduling/file-diff logic.
November 2024
October 2024
9 Commits • 4 Features
Oct 1, 2024October 2024 (arenadata/SSM) delivered reliability, configurability, and observability enhancements that strengthen CopyScheduler and HDFS actions, enabling safer multi-cluster operations and faster issue resolution. Key outcomes include race-condition fixes, dynamic configuration via SSM options, a refreshed logging stack, and a unified HDFS action model with remote-cluster support. These changes reduce debugging time, improve deployment confidence, and demonstrate strong concurrent systems and distributed FS capabilities.
October 2024
9 Commits • 4 Features
Oct 1, 2024October 2024 (arenadata/SSM) delivered reliability, configurability, and observability enhancements that strengthen CopyScheduler and HDFS actions, enabling safer multi-cluster operations and faster issue resolution. Key outcomes include race-condition fixes, dynamic configuration via SSM options, a refreshed logging stack, and a unified HDFS action model with remote-cluster support. These changes reduce debugging time, improve deployment confidence, and demonstrate strong concurrent systems and distributed FS capabilities.
September 2024
1 Commits • 1 Features
Sep 1, 2024September 2024 Monthly Summary for arenadata/SSM: Delivered SmartAgent Metrics Collection and Export, enabling metrics collection and export via JMX and Prometheus to improve observability and reliability. Major bugs fixed: none reported this month. Overall impact: enhanced monitoring capabilities, faster incident detection, and data-driven optimization of SmartAgent; supporting SLA adherence and operational efficiency. Technologies/skills demonstrated: instrumentation patterns, metrics exporters for JMX and Prometheus, and end-to-end instrumentation across the SmartAgent component.
1 Commits • 1 Features
Sep 1, 2024September 2024 Monthly Summary for arenadata/SSM: Delivered SmartAgent Metrics Collection and Export, enabling metrics collection and export via JMX and Prometheus to improve observability and reliability. Major bugs fixed: none reported this month. Overall impact: enhanced monitoring capabilities, faster incident detection, and data-driven optimization of SmartAgent; supporting SLA adherence and operational efficiency. Technologies/skills demonstrated: instrumentation patterns, metrics exporters for JMX and Prometheus, and end-to-end instrumentation across the SmartAgent component.
September 2024
Activity
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Quality Metrics
Correctness84.0%
Maintainability82.4%
Architecture80.2%
Performance72.8%
AI Usage22.4%
Skills & Technologies
Programming Languages
DockerfileJavaJavaScriptSQLShellTypeScriptXMLYAMLjavayaml
Technical Skills
API DesignAPI DevelopmentAPI IntegrationActor ModelAkkaBackend DevelopmentBuild ConfigurationCode RefactoringConcurrencyConfiguration ManagementData ManagementData ModelingDatabaseDatabase ManagementDatabase Schema Design
Repositories Contributed To
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