streamingest: unskip TestTenantStreamingUnavailableStreamAddress

Changing a few things to get this test to pass under stress:
- use 50 ranges instead of 10, because there are already 50-ish system ranges,
  so if we write only 10 more ranges those might not get distributed on all
  servers.
- avoid reading from the source cluster after stopping a node, it's flaky,
  see #107499 for more info.

Epic: none
Fixes: #107023
Fixes: #106865

Release note: None

pkg/ccl/streamingccl/replicationtestutils/testutils.go

@@ -420,8 +420,11 @@ func requireReplicatedTime(targetTime hlc.Timestamp, progress *jobspb.Progress)
 }
 
 func CreateScatteredTable(t *testing.T, c *TenantStreamingClusters, numNodes int) {
-	// Create a source table with multiple ranges spread across multiple nodes
-	numRanges := 10
+	// Create a source table with multiple ranges spread across multiple nodes. We
+	// need around 50 or more ranges because there are already over 50 system
+	// ranges, so if we write just a few ranges those might all be on a single
+	// server, which will cause the test to flake.
+	numRanges := 50
 	rowsPerRange := 20
 	c.SrcTenantSQL.Exec(t, "CREATE TABLE d.scattered (key INT PRIMARY KEY)")
 	c.SrcTenantSQL.Exec(t, "INSERT INTO d.scattered (key) SELECT * FROM generate_series(1, $1)",

pkg/ccl/streamingccl/streamingest/replication_stream_e2e_test.go

@@ -15,7 +15,6 @@ import (
 	"testing"
 	"time"
 
-	"github.com/cockroachdb/cockroach/pkg/base"
 	"github.com/cockroachdb/cockroach/pkg/ccl/streamingccl/replicationtestutils"
 	"github.com/cockroachdb/cockroach/pkg/ccl/streamingccl/replicationutils"
 	_ "github.com/cockroachdb/cockroach/pkg/cloud/impl"
@@ -460,11 +459,12 @@ func TestTenantStreamingDropTenantCancelsStream(t *testing.T) {
 	})
 }
 
+// TestTenantStreamingUnavailableStreamAddress verifies that after a
+// pause/resume (replan) we will not use a dead server as a source.
 func TestTenantStreamingUnavailableStreamAddress(t *testing.T) {
 	defer leaktest.AfterTest(t)()
 	defer log.Scope(t).Close(t)
 
-	skip.WithIssue(t, 106865)
 	skip.UnderDeadlock(t, "multi-node may time out under deadlock")
 	skip.UnderRace(t, "takes too long with multiple nodes")
 
@@ -495,38 +495,23 @@ func TestTenantStreamingUnavailableStreamAddress(t *testing.T) {
 	streamAddresses := progress.GetStreamIngest().StreamAddresses
 	require.Greater(t, len(streamAddresses), 1)
 
-	destroyedAddress := c.SrcURL.String()
+	// Write something to the source cluster, note that the job is paused - and
+	// therefore not replicated for now.
+	c.SrcTenantSQL.Exec(t, "CREATE TABLE d.x (id INT PRIMARY KEY, n INT)")
+	c.SrcTenantSQL.Exec(t, `INSERT INTO d.x VALUES (3);`)
 
+	// Stop a server on the source cluster. Note that in this test we are trying
+	// to avoid using the source cluster after this point because if we do the
+	// test flakes, see #107499 for more info.
+	destroyedAddress := c.SrcURL.String()
 	require.NoError(t, c.SrcTenantConn.Close())
 	c.SrcTenantServer.Stopper().Stop(ctx)
 	c.SrcCluster.StopServer(0)
 
-	// Once SrcCluster.Server(0) is shut down queries must be ran against a different server
-	alternateSrcSysSQL := sqlutils.MakeSQLRunner(c.SrcCluster.ServerConn(1))
-	_, alternateSrcTenantConn := serverutils.StartTenant(t, c.SrcCluster.Server(1),
-		base.TestTenantArgs{
-			TenantID:            c.Args.SrcTenantID,
-			TenantName:          c.Args.SrcTenantName,
-			DisableCreateTenant: true,
-		})
-	defer alternateSrcTenantConn.Close()
-	alternateSrcTenantSQL := sqlutils.MakeSQLRunner(alternateSrcTenantConn)
-
-	alternateCompareResult := func(query string) {
-		sourceData := alternateSrcTenantSQL.QueryStr(c.T, query)
-		destData := c.DestTenantSQL.QueryStr(c.T, query)
-		require.Equal(c.T, sourceData, destData)
-	}
-
 	c.DestSysSQL.Exec(t, `RESUME JOB $1`, ingestionJobID)
 	jobutils.WaitForJobToRun(t, c.DestSysSQL, jobspb.JobID(ingestionJobID))
 
-	alternateSrcTenantSQL.Exec(t, "CREATE TABLE d.x (id INT PRIMARY KEY, n INT)")
-	alternateSrcTenantSQL.Exec(t, `INSERT INTO d.x VALUES (3);`)
-
-	var cutoverTime time.Time
-	alternateSrcSysSQL.QueryRow(t, "SELECT clock_timestamp()").Scan(&cutoverTime)
-
+	cutoverTime := c.SrcCluster.Server(1).Clock().Now().GoTime()
 	var cutoverStr string
 	c.DestSysSQL.QueryRow(c.T, `ALTER TENANT $1 COMPLETE REPLICATION TO SYSTEM TIME $2::string`,
 		c.Args.DestTenantName, cutoverTime).Scan(&cutoverStr)
@@ -539,18 +524,15 @@ func TestTenantStreamingUnavailableStreamAddress(t *testing.T) {
 		require.NoError(t, cleanUpTenant())
 	}()
 
-	// The destroyed address should have been removed from the topology
+	// The destroyed address should have been removed from the topology.
 	progress = jobutils.GetJobProgress(c.T, c.DestSysSQL, jobspb.JobID(ingestionJobID))
 	newStreamAddresses := progress.GetStreamIngest().StreamAddresses
 	require.Contains(t, streamAddresses, destroyedAddress)
 	require.NotContains(t, newStreamAddresses, destroyedAddress)
 
-	alternateCompareResult("SELECT * FROM d.t1")
-	alternateCompareResult("SELECT * FROM d.t2")
-	alternateCompareResult("SELECT * FROM d.x")
-
-	// We can't use alternateCompareResult because it'll try to contact the deceased
-	// n1 even if the lease holders for d.scattered have all moved to other nodes
+	// Verify the destination tenant is fully replicated.
+	destData := c.DestTenantSQL.QueryStr(c.T, "SELECT * FROM d.x")
+	require.Equal(c.T, [][]string{{"3", "NULL"}}, destData)
 	dstScatteredData := c.DestTenantSQL.QueryStr(c.T, "SELECT * FROM d.scattered ORDER BY key")
 	require.Equal(t, srcScatteredData, dstScatteredData)
 }