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-rw-r--r--tensorflow/contrib/bigtable/README.md10
1 files changed, 8 insertions, 2 deletions
diff --git a/tensorflow/contrib/bigtable/README.md b/tensorflow/contrib/bigtable/README.md
index b9abfa8295..f33eaf7e3d 100644
--- a/tensorflow/contrib/bigtable/README.md
+++ b/tensorflow/contrib/bigtable/README.md
@@ -324,8 +324,14 @@ If you encounter a log line that includes the following:
"filename":"/usr/share/grpc/roots.pem"
```
-you likely need to copy the [gRPC `roots.pem` file][grpcPem] to
-`/usr/share/grpc/roots.pem` on your local machine.
+you can solve it via either of the following approaches:
+
+* copy the [gRPC `roots.pem` file][grpcPem] to
+ `/usr/share/grpc/roots.pem` on your local machine, which is the default
+ location where gRPC will look for this file
+* export the environment variable `GRPC_DEFAULT_SSL_ROOTS_FILE_PATH` to point to
+ the full path of the gRPC `roots.pem` file on your file system if it's in a
+ different location
[grpcPem]: https://github.com/grpc/grpc/blob/master/etc/roots.pem