Revert "[Streaming] Fault Tolerance Implementation (#10008)" (#10582)

This reverts commit 1b1466748f.

streaming/python/config.py

@@ -8,6 +8,7 @@ class Config:
     NATIVE_CHANNEL = "native_channel"
     CHANNEL_SIZE = "channel_size"
     CHANNEL_SIZE_DEFAULT = 10**8
+    IS_RECREATE = "streaming.is_recreate"
     # return from StreamingReader.getBundle if only empty message read in this
     # interval.
     TIMER_INTERVAL_MS = "timer_interval_ms"
@@ -25,38 +26,3 @@ class Config:
     FLOW_CONTROL_TYPE = "streaming.flow_control_type"
     WRITER_CONSUMED_STEP = "streaming.writer.consumed_step"
     READER_CONSUMED_STEP = "streaming.reader.consumed_step"
-
-    # state backend
-    CP_STATE_BACKEND_TYPE = "streaming.context-backend.type"
-    CP_STATE_BACKEND_MEMORY = "memory"
-    CP_STATE_BACKEND_LOCAL_FILE = "local_file"
-    CP_STATE_BACKEND_DEFAULT = CP_STATE_BACKEND_MEMORY
-
-    # local disk
-    FILE_STATE_ROOT_PATH = "streaming.context-backend.file-state.root"
-    FILE_STATE_ROOT_PATH_DEFAULT = "/tmp/ray_streaming_state"
-
-    # checkpoint
-    JOB_WORKER_CONTEXT_KEY = "jobworker_context_"
-
-    # reliability level
-    REQUEST_ROLLBACK_RETRY_TIMES = 3
-
-    # checkpoint prefix key
-    JOB_WORKER_OP_CHECKPOINT_PREFIX_KEY = "jobwk_op_"
-
-
-class ConfigHelper(object):
-    @staticmethod
-    def get_cp_local_file_root_dir(conf):
-        value = conf.get(Config.FILE_STATE_ROOT_PATH)
-        if value is not None:
-            return value
-        return Config.FILE_STATE_ROOT_PATH_DEFAULT
-
-    @staticmethod
-    def get_cp_context_backend_type(conf):
-        value = conf.get(Config.CP_STATE_BACKEND_TYPE)
-        if value is not None:
-            return value
-        return Config.CP_STATE_BACKEND_DEFAULT