knktc's Notes

To use a custom UDF through HiveServer2 on CDH4, add the jar directory to both hive.aux.jars.path and HIVE_AUX_JARS_PATH.

Use Start-Job and a small polling loop to run a limited number of PowerShell tasks in parallel instead of one by one.

Since Docker containers do not let you manage /etc/hosts freely, running dnsmasq locally can provide custom host resolution instead.

Notes on installing the classic Docker Registry service on CentOS, wiring it through Nginx, and supervising it with supervisord.

A small collection of practical Docker notes, including stopping containers, detach behavior, timezone mapping, cron issues, and moving /var/lib/docker.

Use GPG with external public and secret keyring files so you can decrypt on another machine without importing your keys.

If lftp can log in over FTPS but file uploads fail with a 521 error, enable ftp:ssl-protect-data.

A simple pyhs2 example for connecting to HiveServer2 from Python, running a query, and fetching the results.

If a disk keeps getting claimed by LVM because of stale dmraid metadata, disabling and clearing the old RAID signature can help.

If easy_install cannot find protobuf's setup script, try installing it again with an explicit allowed host.