Takeshi Yamamuro

Login: maropu

Company: null

Location: Tokyo/Japan

Bio: R&D engineer - interested in DBs, compilers, compression, hardware stuffs (e.g., SIMD, NUMA, GPU, ...), Apache Spark, Apache Hivemall, PostgreSQL, ...

Blog: http://www.linkedin.com/pub/takeshi-yamamuro/56/374/395

Blog: http://www.linkedin.com/pub/takeshi-yamamuro/56/374/395

Member of

1. The Apache Software Foundation

Repositories

apache-hivemall

Apache Hivemall released binaries for Spark Packages

bitonic_sort

A hardware-conscious and hy-speed sorting code

bitshuffle

Filter for improving compression of typed binary data.

dbitv

A x86/64-optimized rank/select dictionary for dense bit-arrays

db-readings

Readings in Databases

hivemall

Scalable machine learning library for Hive/Hadoop

hivemall-spark

A Hivemall wrapper for Spark

incubator-hivemall

Mirror of Apache Hivemall (incubating)

instruction-bench

instruction-bench

integer_encoding_library

An encoder/decoder collection for a sequence of integers

jnuma

A Java library for accessing NUMA (Non Uniform Memory Access) API

lljvm-translator

A lightweight library to inject LLVM bitcode into JVMs

lockbench

A benchmark for a variety of spin-lock implementation using x86 primitives

lz4-java

LZ4 compression for Java

maropu.github.com

null

membench

A micro-benchmark for memory stuffs such as caches & TLB

snappy

A fast compressor/decompressor

snappy-bitshuffle-java-bench

A benchmark code for snappy + bit-shuffling

snappy-java

Snappy compressor/decompressor for Java

spark

Mirror of Apache Spark

spark-hash-benchmark

Benchmark code for hash functions in Apache Spark

spark-kinesis-sql-asl

Amazon Kinesis Source for Structured Streaming

spark-sql-perf

null

spark-sql-server

Yet Another Spark SQL JDBC/ODBC server based on the PostgreSQL V3 protocol

spark-tpcds-datagen

All the things about TPC-DS in Apache Spark

spark_tpcds_v2.7.0

TPC-DS v2.7.0 generated query files for Apache Spark

spark-website

Mirror of Apache Spark Website

supersonic

supersonic

vpacker

A simple integer compression library for C/C++/Java

xgboost

Scalable, Portable and Distributed Gradient Boosting (GBDT, GBRT or GBM) Library, for Python, R, Java, Scala, C++ and more. Runs on single machine, Hadoop, Spark, Flink and DataFlow

zstd

Zstandard - Fast real-time compression algorithm

Commits To