backup: implement store based backup to solve the long tail issue (pi…

…ngcap#53081)

ref pingcap#52534

br/pkg/backup/BUILD.bazel

@@ -33,8 +33,6 @@ go_library(
         "//pkg/statistics/handle",
         "//pkg/statistics/handle/util",
         "//pkg/util",
-        "//pkg/util/codec",
-        "//pkg/util/redact",
         "//pkg/util/table-filter",
         "@com_github_google_btree//:btree",
         "@com_github_opentracing_opentracing_go//:opentracing-go",
@@ -47,7 +45,6 @@ go_library(
         "@com_github_pingcap_log//:log",
         "@com_github_prometheus_client_golang//prometheus",
         "@com_github_tikv_client_go_v2//oracle",
-        "@com_github_tikv_client_go_v2//tikv",
         "@com_github_tikv_client_go_v2//txnkv/txnlock",
         "@com_github_tikv_client_go_v2//util",
         "@com_github_tikv_pd_client//:client",
@@ -76,6 +73,7 @@ go_test(
         "//br/pkg/metautil",
         "//br/pkg/mock",
         "//br/pkg/pdutil",
+        "//br/pkg/rtree",
         "//br/pkg/storage",
         "//br/pkg/utils",
         "//pkg/parser/model",
@@ -84,15 +82,11 @@ go_test(
         "//pkg/testkit/testsetup",
         "//pkg/util/table-filter",
         "@com_github_golang_protobuf//proto",
-        "@com_github_pingcap_failpoint//:failpoint",
         "@com_github_pingcap_kvproto//pkg/brpb",
         "@com_github_pingcap_kvproto//pkg/encryptionpb",
-        "@com_github_pingcap_kvproto//pkg/errorpb",
         "@com_github_stretchr_testify//require",
         "@com_github_tikv_client_go_v2//oracle",
         "@com_github_tikv_client_go_v2//testutils",
-        "@com_github_tikv_client_go_v2//tikv",
-        "@com_github_tikv_client_go_v2//txnkv/txnlock",
         "@com_github_tikv_pd_client//:client",
         "@io_opencensus_go//stats/view",
         "@org_uber_go_goleak//:goleak",