Backport to branch-1.1: Try to improve error message for server error (#695)

* backport c9554e7

* use e.getMessage

Author: linzhou-db

client/src/main/scala/io/delta/sharing/client/DeltaSharingClient.scala

@@ -1132,10 +1132,20 @@ class DeltaSharingRestClient(
             }
           } catch {
             case e: org.apache.http.ConnectionClosedException =>
-              val error = s"Request to delta sharing server failed"  + getDsQueryIdForLogging +
-                s" due to ${e}."
-              logError(error)
-              lineBuffer += error
+              logError(s"Request to delta sharing server failed$getDsQueryIdForLogging " +
+                s"due to ${e}.")
+              // takeRight(3) is safe even if the lineBuffer is empty or has fewer than 3 lines.
+              val linesToLog = lineBuffer.takeRight(3).mkString("\n")
+              logError("Last 3 lines:" + linesToLog)
+
+              val error = s"Request to delta sharing server failed$getDsQueryIdForLogging " +
+                s"due to ${e.getMessage}."
+              if (lineBuffer.nonEmpty) {
+                val lastIndex = lineBuffer.length - 1
+                lineBuffer(lastIndex) = (error + lineBuffer(lastIndex)).replace(' ', '_')
+              } else {
+                lineBuffer += error.replace(' ', '_')
+              }
               lineBuffer.toList
           } finally {
             input.close()