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Connect to Bigtable emulator from localhost with Node.js client


By : user2176261
Date : October 14 2020, 02:21 PM
seems to work fine Per the Using the Cloud Bigtable Emulator documentation:
code :


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How to connect to a running bigtable emulator from java


By : Jagdishsinh Dodiya
Date : March 29 2020, 07:55 AM
around this issue I am trying to use the bigtable emulator from gcloud beta emulators. I launch the emulator, grab the hostname (localhost) and port (in this instance 8885) , You need one additional config property to be set:
code :
conf.set(BigtableOptionsFactory.BIGTABLE_USE_PLAINTEXT_NEGOTIATION, true);

How to connect to a bigtable emulator using cbt command line


By : 叶煜松
Date : March 29 2020, 07:55 AM
I hope this helps . The Cloud Bigtable emulator doesn't support any instance-level operations (CRUD for instances). You can use any arbitrary instance name when connecting to it and start by creating a table.

Bigtable node client: How to set read offset for pagination?


By : bassem
Date : March 29 2020, 07:55 AM
around this issue Using https://cloud.google.com/nodejs/docs/reference/bigtable/0.13.x/Table#createReadStream start is an option. As you retrieve the first page. you can use the last row key to set the start for the next page (will need to exclude the first result for all page counts > 1)

How to connect to Bigtable Emulator from a GoLang application? How to use it?


By : puneetk
Date : March 29 2020, 07:55 AM
it fixes the issue The BIGTABLE_EMULATOR_HOST environment variable overrides the normal connection logic. Having it set causes a client to connect to the emulator without any special changes needed in the code (i.e. the project/instance values passed to NewAdminClient()/NewClient() are ignored).
The command provided in step 2 of the Using the emulator instructions sets the environment variable for you.
code :
$ sudo apt install golang
<... SNIP apt output ...>
$ mkdir ~/go
$ export GOPATH=$HOME/go
$ sudo apt install google-cloud-sdk
<... SNIP apt output ...>
$ sudo apt install google-cloud-sdk-bigtable-emulator
<... SNIP apt output ...>
$ gcloud beta emulators bigtable start
Executing: /usr/lib/google-cloud-sdk/platform/bigtable-emulator/cbtemulator --host=localhost --port=8086
[bigtable] Cloud Bigtable emulator running on 127.0.0.1:8086
$ gcloud beta emulators bigtable env-init
export BIGTABLE_EMULATOR_HOST=localhost:8086
$ $(gcloud beta emulators bigtable env-init)
$ git clone https://github.com/GoogleCloudPlatform/golang-samples.git
$ cd golang-samples/bigtable/helloworld
$ go get cloud.google.com/go/bigtable
$ go get golang.org/x/net/context
$ go run main.go -project foo -instance bar
2018/06/18 00:39:27 Creating table Hello-Bigtable
2018/06/18 00:39:27 Writing greeting rows to table
2018/06/18 00:39:27 Getting a single greeting by row key:
2018/06/18 00:39:27     greeting0 = Hello World!
2018/06/18 00:39:27 Reading all greeting rows:
2018/06/18 00:39:27     greeting0 = Hello World!
2018/06/18 00:39:27     greeting1 = Hello Cloud Bigtable!
2018/06/18 00:39:27     greeting2 = Hello golang!
2018/06/18 00:39:27 Deleting the table
$ go run main.go -project foo -instance bar
2018/06/18 00:40:03 Retryable error: rpc error: code = Unavailable desc = all SubConns are in TransientFailure, latest connection error: connection error: desc = "transport: Error while dialing dial tcp [::1]:8086: getsockopt: connection refused", retrying in 47.77941ms
2018/06/18 00:40:03 Retryable error: rpc error: code = Unavailable desc = all SubConns are in TransientFailure, latest connection error: connection error: desc = "transport: Error while dialing dial tcp [::1]:8086: getsockopt: connection refused", retrying in 2.153551ms
2018/06/18 00:40:03 Retryable error: rpc error: code = Unavailable desc = all SubConns are in TransientFailure, latest connection error: connection error: desc = "transport: Error while dialing dial tcp [::1]:8086: getsockopt: connection refused", retrying in 114.145821ms
<... SNIP repeated errors ...>
^Csignal: interrupt
$

Cannot connect from Titan to Google Bigtable via Hbase client


By : Hugh Forric
Date : March 29 2020, 07:55 AM
it fixes the issue Titan is no longer maintained; however, you can use JanusGraph (a fork of Titan) together with Google Cloud Bigtable; see the following guides for details:
running JanusGraph with Cloud Bigtable on GCP configuring JanusGraph to connect to Cloud Bigtable
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