Fix #516. Close WAL log/index files if they aren't needed anymore

CHANGELOG.md

@@ -1,3 +1,9 @@
+## v0.6.3 [unreleased]
+
+### Bugfixes
+
+- [Issue #516](https://github.com/influxdb/influxdb/issues/516). Close WAL log/index files when they aren't being used
+
 ## v0.6.2 [2014-05-09]
 
 ### Bugfixes
@@ -487,4 +493,3 @@
 ## v0.0.1 [2013-10-22]
 
   * Initial Release
-

src/wal/wal.go

@@ -504,6 +504,8 @@ func (self *WAL) rotateTheLogFile(nextRequestNumber uint32) (bool, error) {
 	if err := lastIndex.syncFile(); err != nil {
 		return false, err
 	}
+	lastLogFile.close()
+	lastIndex.close()
 	lastLogFile, err := self.createNewLog(nextRequestNumber + 1)
 	if err != nil {
 		return false, err