row.exists() promise is never resolved for the emulator

[igorbernstein2]

Environment details

• OS: Mac OS X 10.14.6
• Node.js version: v12.11.1
• npm version: 6.11.3
• @google-cloud/bigtable version: 2.1.0

Steps to reproduce

1. gcloud beta emulators bigtable start &
2. $(gcloud beta emulators bigtable env-init )
3. npm install @google-cloud/bigtable
4. The script below:

cat <<- EOF | node
const table = require('@google-cloud/bigtable')().instance("instance1").table("table1");

(async () => {
    await table.create();
    console.log("table created!")
    await table.row("nonexistent-row").exists();
    console.log("this is never seen!")
})()
EOF

The log line this is never seen! is never printed. However if you run this against a prod instance (by unsetting BIGTABLE_EMULATOR_HOST envvar), the line is printed. The same is true of row.get().

It seems like the read rows end event is not being properly propagated when connecting to the emulator. I can't figure out what grpc-node is doing differently for the go emulator, but other languages don't seem to have an issue (ie. grpc-java is able to detect end of stream for readRows in the emulator just fine).

[bcoe]

@igorbernstein2 thank you for the bug report.

[stephenplusplus]

I'm still investigating, but it looks like if you explicitly provide a project ID, it behaves as expected:

-const table = require('@google-cloud/bigtable')()
+const table = require('@google-cloud/bigtable')({ projectId: '...' })

[rjmasikome]

I have tried to test this further with 4 different node version and 2 different bigtable version, however the workaround did not work. The console.log below is never really seen, and the program just exited from there. Note: Using client version 1.0.1 works.

Here's the snippet that I used

const table = require('@google-cloud/bigtable')({projectId: "my-project-1"}).instance("instance1").table("table1");

(async () => {
    await table.create();
    console.log("table created!")
    await table.row("nonexistent-row").exists();
    console.log("this is never seen!")
})();

For more context here is the environment that I used

• OS: MacOS Mojave
• Node.js version: 10.16.3, 11.15.0, 12.13.0, 13.0.1
• yarn version: v1.19.1
• @google-cloud/bigtable version: 2.1.0 and 2.2.1

Steps to reproduce:

1. Make sure the affected bigtable client is installed
2. Run bigtable emulator gcloud beta emulators bigtable start
3. Save the snippet as bt.js
4. Run with the proper env variable BIGTABLE_EMULATOR_HOST=127.0.0.1:8086 node bt.js

[danieljbruce]

Try again using the latest version of the emulator and nodejs-bigtable. I get an output that looks like:

table created!
this is never seen!

[danieljbruce]

This was fixed in version 3.0.0-beta.0 of nodejs-bigtable.