rubieHess commented on a change in pull request #4800:
URL: https://github.com/apache/cloudstack/pull/4800#discussion_r598318705
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File path:
plugins/hypervisors/kvm/src/main/java/com/cloud/hypervisor/kvm/resource/LibvirtComputingResource.java
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@@ -4266,7 +4266,11 @@ public void setBackingFileFormat(String volPath) {
Map<String, String> info = qemu.info(file);
String backingFilePath = info.get(new String("backing_file"));
Review comment:
I detect that this code is problematic. According to the [Performance
(PERFORMANCE)](https://spotbugs.readthedocs.io/en/stable/bugDescriptions.html#performance-performance),
[Dm: Method invokes inefficient new String(String) constructor
(DM_STRING_CTOR)](https://spotbugs.readthedocs.io/en/stable/bugDescriptions.html#dm-method-invokes-inefficient-new-string-string-constructor-dm-string-ctor).
Using the java.lang.String(String) constructor wastes memory because the
object so constructed will be functionally indistinguishable from the String
passed as a parameter. Just use the argument String directly.
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