Fix for request steam failure

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 All notable changes to the Imperative package will be documented in this file.
 
+## Recent Changes
+
+- BugFix: Fix for `AbstactRestClient` failing to return when streaming a large dataset or USS file [#1805](https://github.com/zowe/zowe-cli/issues/1805), [#1813](https://github.com/zowe/zowe-cli/issues/1813), and [#1824](https://github.com/zowe/zowe-cli/issues/1824)
+
 ## `5.18.2`
 
 - BugFix: Fixed normalization on stream chunk boundaries [#1815](https://github.com/zowe/zowe-cli/issues/1815)

packages/rest/src/client/AbstractRestClient.ts

@@ -699,6 +699,10 @@ export abstract class AbstractRestClient {
                 causeErrors: this.dataString,
                 source: "http"
             }));
+        }else if (this.mResponseStream != null && this.mResponseStream.writableEnded) {
+            // This will correct any instances where the finished event does not get emitted
+            // even though the stream processing has ended.
+            this.mResolve(this.dataString);
         } else if (this.mResponseStream != null && !this.mResponseStream.writableFinished) {
             this.mResponseStream.on("finish", () => this.mResolve(this.dataString));
         } else {