Merge pull request rust-rocksdb#5 from pingcap/busyjay/fix-undefined-…

…symbol

README.md

@@ -26,11 +26,7 @@ Feedback and pull requests welcome!  If a particular feature of RocksDB is impor
 
 First, use your system's package manager to install snappy.  This is optional, but lets rocksdb take advantage of better compression, and some code may require it.
 
-```bash
-wget https://github.com/facebook/rocksdb/archive/rocksdb-3.8.tar.gz
-tar xvf rocksdb-3.8.tar.gz && cd rocksdb-rocksdb-3.8 && make shared_lib
-sudo make install
-```
+To install rocksdb, please refer to it's installation guide. For Windows users, please make sure you configure rocksdb with `CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS` enabled.
 
 ### Running
 ###### Cargo.toml
@@ -178,7 +174,6 @@ fn badly_tuned_for_somebody_elses_disk() -> DB {
     opts.set_compaction_style(DBUniversalCompaction);
     opts.set_max_background_compactions(4);
     opts.set_max_background_flushes(4);
-    opts.set_filter_deletes(false);
     opts.set_disable_auto_compactions(true);
 
     DB::open(&opts, path).unwrap()

librocksdb_sys/src/lib.rs

@@ -185,7 +185,6 @@ extern "C" {
                                                            max_bg_compactions: c_int);
     pub fn crocksdb_options_set_max_background_flushes(options: *mut DBOptions,
                                                        max_bg_flushes: c_int);
-    pub fn crocksdb_options_set_filter_deletes(options: *mut DBOptions, v: bool);
     pub fn crocksdb_options_set_disable_auto_compactions(options: *mut DBOptions, v: c_int);
     pub fn crocksdb_options_set_report_bg_io_stats(options: *mut DBOptions, v: c_int);
     pub fn crocksdb_options_set_compaction_readahead_size(options: *mut DBOptions, v: size_t);

src/main.rs

@@ -176,7 +176,6 @@ mod tests {
         opts.set_compaction_style(DBUniversal);
         opts.set_max_background_compactions(4);
         opts.set_max_background_flushes(4);
-        opts.set_filter_deletes(false);
         opts.set_report_bg_io_stats(true);
         opts.set_wal_recovery_mode(DBRecoveryMode::PointInTime);
         opts.enable_statistics();

src/rocksdb.rs

@@ -1220,7 +1220,11 @@ mod test {
         let opts = Options::new();
         // The DB will still be open when we try to destroy and the lock should fail
         match DB::destroy(&opts, path_str) {
-            Err(ref s) => assert!(s.contains("LOCK: No locks available")),
+            Err(ref s) => {
+                assert!(s.contains("IO error: ") && s.contains("lock"),
+                        "expect lock fail, but got {}",
+                        s);
+            }
             Ok(_) => panic!("should fail"),
         }
     }

src/rocksdb_options.rs

@@ -487,12 +487,6 @@ impl Options {
         }
     }
 
-    pub fn set_filter_deletes(&mut self, filter: bool) {
-        unsafe {
-            crocksdb_ffi::crocksdb_options_set_filter_deletes(self.inner, filter);
-        }
-    }
-
     pub fn set_disable_auto_compactions(&mut self, disable: bool) {
         unsafe {
             if disable {
@@ -603,7 +597,8 @@ impl Options {
 
     pub fn set_compaction_readahead_size(&mut self, size: u64) {
         unsafe {
-            crocksdb_ffi::crocksdb_options_set_compaction_readahead_size(self.inner, size as size_t);
+            crocksdb_ffi::crocksdb_options_set_compaction_readahead_size(self.inner,
+                                                                         size as size_t);
         }
     }
 }