Why you should not trust Amazon

Because Amazon doesn’t trust you. This thing happened to me. I bought Sony SEL16-35 f2.8 GM lens ($2,198) from Amazon.com. However I received the below picture’s item. The package and lens case was actual SEL16-35 GM item. Someone replaced the inside at some point. I should’ve recorded the open box event. I really regret what I didn’t. I requested a replacement as usual method and received a real SEL16-36 GM a couple days after. I returned the dirty lens to Amazon. However my return status didn’t update. I contacted to a customer support and I realize I made two shipping … Continue reading

Solr 5.5 and MariaDB connection

This is the note when I tried to install Solr5.5 and connect to MariaDB on Debian. We don’t need schema.xml Solr5.x. Install JRE

Install Solr 5.5 Download from http://lucene.apache.org/solr/

Download MariaDB java connector You can download mariadb-java-client-1.4.0.jar from here but you need an account. https://mariadb.com/my_portal/download/java-client

Create db-data-config.xml Note: I have an issue in here. I set “limit 10” but solr try to crawl the entire table. I’m still not figure out how to control them.

What is the org.mariadb.jdbc.Driver ? You can verify it when you open jar file. Just double click mariadb-java-client-1.4.0.jar. You can … Continue reading

4k PC monitor for writing – Part2

Parts list and costs I’ve picked up PC parts for writing (for my wife) + watching TV (for us). *Case: Antec P280 ($122) Motherboard: Gigabyte GA-970A-UD3P ($75) — This is not good for Linux. CPU: AMD FX-6300 BE (logical 6 cores) ($89) CPU Cooler: Cooler Master Hyper 212 ($27) *SSD: Samsung 850 250GB ($80) Memory: ADATA 16GB (AX3U1866W8G10-DR) ($80) Video Card: Gigabyte AMD R7 360 (GV-R736OC-2GD) ($110) — This is no problem for 4k monitor and Linux (installed AMD driver and used Displayport). *Power Supply: EVGA 500w ($40) *Monitor: Samsung UE590 UHD ($400) *Speaker: Mackie CR3 ($100) Total: $1,123 (* … Continue reading

4k PC monitor for writing – Part1

My wife is a Mac user but her MacBook Pro become slow from the age and a filled up HDD. Also she wants a desktop pc for writing with scrivener. Laptop + sofa or laptop + desk are uncomfortable for her. And she doesn’t go a cafe for writing anymore.   Why should you keep a laptop? Expensive, small monitor and small capacity of HDD/SDD. Apple iMac spec is quit old spec. Mac Pro is too expensive. She doesn’t render 3D, draw a picture nor edit movie. And more, she doesn’t like Windows. I don’t care OS, though, I always … Continue reading

Traveling to Japan with AT&T International Plan.

My wife had a business trip to Japan. Because of this, we researched about international phone plans in Japan. Our phones were T-mobile, but T-mobile has a really bad connection even if you are in town. T-mobile also has a free international roaming in Japan, but many people say the phone data speed is very slow. 320 kbps? It sounded like edge mode. If there is no internet, then there is no point in using a smartphone. So we decided to change T-mobile to AT&T and purchase the “AT&T Passport Silver” plan for $60. This plan includes; A one time … Continue reading

Shenandoah: Pine Hill Gap – Broad Hollow Loop

This week for hiking, we decided to take Pine Hill Gap and Broad Hollow Trail loop. We only have limited numbers trails from our bucket list. This trail is approximately 4 hour. Even though day hike, we have a limitation of 12 hours. Because we have a diabetic cat that needs an insulin twice in a day. We try to go back home at least 1 hour early for next insulin. In this situation, we have to pick up a trail what is 6-7 hour walking, and location is 2 hour from our house one way travel. If you can … Continue reading

How to fix Sony Nex monitor screen peel off

My wife has Nex-5 that the monitor screen coat has been peeled off from edges. I wonder why Sony sells like this quality product. Anyway I researched about this issue on Internet. This issue is quit a common on Sony camera. Even if you put on a protect film, it will peel off when you replace the protect film. Well, my slt-55v will has same issue, though.     So, how can I fix this? The screen is a sticker like a protect film. It’s the only way to fix that you replace the sticker. Then I’d researched about the … Continue reading

Sigma 30 f2.8 vs Sony SEL18-55 vs SELP1650 vs SEL30M35

I was thinking to sell that I’ve used Sony SLT-a55/Tamron 28-75 f2.8 over 5 years and buy a used Nex-7 (The body price is around $300). At the moment, I found a cheap used nex-7 + 2 lenses set and could buy it. I have 4 lenses temporarily and all lenses have 30mm focus length. Then I compared them. Camera: Nex-7 Lenses: Sigma 30 f2.8 (Fixed) Sony SEL1855/f3.5-5.6 (Manual zoom) SELP1650/f3.5-5.6 (Power zoom) SEL30M35/f3.5 (Macro) Focus length: 30mm F number: 5.0 ISO: 100 Publishing: Raw files are resized and converted to jpg by Lightroom   Perhaps, I can’t find any … Continue reading


When I try to use or compile Nutch, Solr, Hbase. I always met JAVA_HOME error. The error means that JAVA_HOME is set a wrong path or not set any path, then executable file or compiler can’t find JRE or JDK.   Check and set JAVA_HOME For checking the current value.

  For setting the value, you have to verify JAVA JRE/JDK is installed already. Usually, it’s installed uber /usr/lib/jvm on Debian or Ubuntu. If you can’t find them you need to download from Oracle Java and install. Which do I install JRE and JDK? You just use Nutch or … Continue reading

Shenandoah: Buck Ridge, Buck Hollow + Meadow Spring Trails

This week for hiking, we decided to take a trail that starts from a parking lot along Route 211, Buck Ridge Trail and Buck Hollow Trail loop + Meadow Spring Summit (includes AT, which connects to Mary’s Rock Summit from Skyline Drive). In total the hike took approximately 5-6 hours. We previously saw several times that the parking lot is always full. I thought there must be a big river along 211 and they had come to swim. Actually, the river is creek. It seems that everybody had come to hike here. You can also access this trail from a … Continue reading