lni edited this page Jan 16, 2019 · 4 revisions

FAQ

Q: I got the following error message when building my dragonboat application in Go.

internal/logdb/gorocksdb/backup.go:5:23: fatal error: rocksdb/c.h: No such file or directory
compilation terminated.

A: RocksDB is not installed or its installation location is not provided to the go tool when building your application. Assuming RocksDB's header files are installed at /usr/local/include/rocksdb, and its lib files are installed at /usr/local/lib, use the following command when building your package xyz.

CGO_LDFLAGS="-L/usr/local/lib -lrocksdb" CGO_CFLAGS="-I/usr/local/include" go build xyz

Q: I got the following error message when building my dragonboat application in Go.

# github.com/lni/dragonboat/internal/logdb/gorocksdb
/tmp/go-build420214618/b111/_x003.o: In function `_cgo_ee4f3b6122c2_Cfunc_rocksdb_cache_get_pinned_usage':
/tmp/go-build/cgo-gcc-prolog:73: undefined reference to `rocksdb_cache_get_pinned_usage'
/tmp/go-build420214618/b111/_x003.o: In function `_cgo_ee4f3b6122c2_Cfunc_rocksdb_cache_get_usage':
/tmp/go-build/cgo-gcc-prolog:91: undefined reference to `rocksdb_cache_get_usage'
/tmp/go-build420214618/b111/_x005.o: In function `_cgo_ee4f3b6122c2_Cfunc_rocksdb_checkpoint_create':
/tmp/go-build/cgo-gcc-prolog:43: undefined reference to `rocksdb_checkpoint_create'
/tmp/go-build420214618/b111/_x005.o: In function `_cgo_ee4f3b6122c2_Cfunc_rocksdb_checkpoint_object_destroy':
/tmp/go-build/cgo-gcc-prolog:55: undefined reference to `rocksdb_checkpoint_object_destroy'
... ...

A: RocksDB is not installed or its installation location is not provided to the go tool when building your application. Assuming RocksDB is installed at /usr/local/lib, use the following command when building your package xyz.

CGO_LDFLAGS="-L/usr/local/lib -lrocksdb" go build xyz

Q: RocksDB failed to build.

A: Please use GCC version 5, 6 or 7 for building RocksDB. When using GCC 8, you may want to use the following command to install a more recent version of RocksDB.

ROCKSDB_VER=5.16.6 make install-rocksdb-ull

This issue has been discussed in #7 and #16.

Q: I got the following error message when playing with those built-in tests.

==27559==ASan runtime does not come first in initial library list; you should either link runtime to your application or manually preload it with LD_PRELOAD.

A: Run make clean and start over again. This is usually caused by loading a .so plugin built with ASAN from a test program not using ASAN.

Q: What is the status for other CPU/OS support.

A: Linux/AMD64 is the most tested platform. MacOSX/Darwin can be used as your DEV/TEST environment. Dragonboat is also known to work on Linux/ARM64,it has been tested on both Amazon EC2's A1 instances and scaleway.com's ARM cloud. 32bit platforms such as Linux/386 will not be supported. Windows will not be supported.

MacOSX/Darwin should not be used in production, see this issue. A warning message is emitted every time when you start NodeHost on Darwin.

Q: Go module support?

A: Go module was added as preliminary support in Go 1.11, it will be finalized in the coming Go 1.12. Go module will be supported by dragonboat once Go 1.12 is released.

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