Syndicate content

Cassandra

Cassandra node says it owns 0%??

Today I ran in a little bit of a problem with an new Cassandra node installation.

After the node was created, I ran nodetool and got this:

 $ bin/nodetool status
Datacenter: dc1
===============
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
--  Address    Load       Tokens       Owns (effective)  Host ID   Rack
UN  127.0.0.1  219.83 KiB 256          0.0%              73bd8721  rack1

It took me a little while to find out that the problem was the IP address. Although it clearly says 127.0.0.1 here, the cassandra.yaml configuration file had localhost.

I edited the ...

Unable to complete the operation against any hosts — from Cassandra

Today I was testing a new intsallation that I prepared in the last month or so and once I hit Cassandra, I got this strange message:

   NoHostAvailable: ('Unable to complete the operation against any hosts',
   {<Host: 192.168.2.92 dc1>: Unavailable('Error from server: code=1000
   [Unavailable exception] message="Cannot achieve consistency level ONE"
   info={\'required_replicas\': 1, \'alive_replicas\': 0, \'consistency\': \'ONE\'}',)})

I looked for a solution with Google but was not really able to find anything that ...

Syndicate content Syndicate content

Diverse Realty

Diverse Realty Team

Want a New Home?
Want to Sell Your House?

Call Alex at
+1 (916)
220 6482

Alexis Wilke, Realtor
Salesperson
Lic. # 02024063

Cory Marcus, Broker
Lic. # 01079165

     

Terms of Site Index

Find the page/content you are looking for with our index.

  • BIOS
    Basic Input/Output System--the code in a microchip that resides in your computer and is used to start it (boot your hard drive, CD, Flash device, etc.)
  • EDLL
    Enhanced Dynamic Link Library--an enhanced dynamic linker that simulates the behavior of the Linux and other Unix linkers by offering a way for libraries to link back inside the main executable. See the EDLL website for more information.
  • float

    float is a type in most software languages referencing an IEEE floating point number. These numbers are generally defined on 32 or 64 bits with three parts: a sign, an exponent and a mantissa. There is also a bias which is not saved in the number. The sign is 0 (positive) or 1 (negative). This means you have a representation of: +0.0 and -0.0. The exponent is about 1/6th the total size in bits. The bias is added/subtracted from the exponent. In the end, it is a signed power of 2 exponent (i.e. exercises a shift on the mantissa.) The mantissa forms the current number.

  • hide
  • IsObject