Add meaningful error for out of disk exception during write

distributed/shuffle/_core.py

@@ -36,7 +36,11 @@
 from distributed.protocol.serialize import ToPickle
 from distributed.shuffle._comms import CommShardsBuffer
 from distributed.shuffle._disk import DiskShardsBuffer
-from distributed.shuffle._exceptions import P2PConsistencyError, ShuffleClosedError
+from distributed.shuffle._exceptions import (
+    P2PConsistencyError,
+    P2POutOfDiskError,
+    ShuffleClosedError,
+)
 from distributed.shuffle._limiter import ResourceLimiter
 from distributed.shuffle._memory import MemoryShardsBuffer
 from distributed.utils import run_in_executor_with_context, sync
@@ -508,6 +512,8 @@ def handle_transfer_errors(id: ShuffleId) -> Iterator[None]:
         raise Reschedule()
     except P2PConsistencyError:
         raise
+    except P2POutOfDiskError:
+        raise
     except Exception as e:
         raise RuntimeError(f"P2P shuffling {id} failed during transfer phase") from e
 
@@ -522,6 +528,8 @@ def handle_unpack_errors(id: ShuffleId) -> Iterator[None]:
         raise Reschedule()
     except P2PConsistencyError:
         raise
+    except P2POutOfDiskError:
+        raise
     except Exception as e:
         raise RuntimeError(f"P2P shuffling {id} failed during unpack phase") from e
 

distributed/shuffle/_disk.py

@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 import contextlib
+import errno
 import pathlib
 import shutil
 import threading
@@ -12,7 +13,7 @@
 
 from distributed.metrics import context_meter, thread_time
 from distributed.shuffle._buffer import ShardsBuffer
-from distributed.shuffle._exceptions import DataUnavailable
+from distributed.shuffle._exceptions import DataUnavailable, P2POutOfDiskError
 from distributed.shuffle._limiter import ResourceLimiter
 from distributed.shuffle._pickle import pickle_bytelist
 from distributed.utils import Deadline, empty_context, log_errors, nbytes
@@ -177,12 +178,21 @@ async def _process(self, id: str, shards: list[Any]) -> None:
             if self._closed:
                 raise RuntimeError("Already closed")
 
-            with open(self.directory / str(id), mode="ab") as f:
-                f.writelines(frames)
-
+            try:
+                self._write_frames(frames, id)
+            except OSError as e:
+                if e.errno == errno.ENOSPC:
+                    raise P2POutOfDiskError from e
+                raise
         context_meter.digest_metric("disk-write", 1, "count")
         context_meter.digest_metric("disk-write", sum(map(nbytes, frames)), "bytes")
 
+    def _write_frames(
+        self, frames: Iterable[bytes | bytearray | memoryview], id: str
+    ) -> None:
+        with open(self.directory / str(id), mode="ab") as f:
+            f.writelines(frames)
+
     def read(self, id: str) -> Any:
         """Read a complete file back into memory"""
         self.raise_on_exception()

distributed/shuffle/_exceptions.py

@@ -15,3 +15,12 @@ class ShuffleClosedError(P2PConsistencyError):
 
 class DataUnavailable(Exception):
     """Raised when data is not available in the buffer"""
+
+
+class P2POutOfDiskError(OSError):
+    def __str__(self) -> str:
+        return (
+            "P2P ran out of available disk space while temporarily storing transferred data. "
+            "Please make sure that P2P has enough disk space available by increasing the number of "
+            "workers or the size of the attached disk."
+        )

distributed/shuffle/_shuffle.py

@@ -48,7 +48,11 @@
     handle_transfer_errors,
     handle_unpack_errors,
 )
-from distributed.shuffle._exceptions import DataUnavailable, P2PConsistencyError
+from distributed.shuffle._exceptions import (
+    DataUnavailable,
+    P2PConsistencyError,
+    P2POutOfDiskError,
+)
 from distributed.shuffle._limiter import ResourceLimiter
 from distributed.shuffle._worker_plugin import ShuffleWorkerPlugin
 from distributed.sizeof import sizeof
@@ -107,6 +111,8 @@ def shuffle_barrier(id: ShuffleId, run_ids: list[int]) -> int:
         raise e
     except P2PConsistencyError:
         raise
+    except P2POutOfDiskError:
+        raise
     except Exception as e:
         raise RuntimeError(f"shuffle_barrier failed during shuffle {id}") from e
 

distributed/shuffle/tests/test_shuffle.py

@@ -2,6 +2,7 @@
 
 import asyncio
 import contextlib
+import errno
 import itertools
 import logging
 import os
@@ -21,6 +22,7 @@
 from dask.utils import key_split
 
 from distributed.shuffle._core import ShuffleId, ShuffleRun, barrier_key
+from distributed.shuffle._disk import DiskShardsBuffer
 from distributed.worker import Status
 
 np = pytest.importorskip("numpy")
@@ -47,7 +49,7 @@
     read_from_disk,
     serialize_table,
 )
-from distributed.shuffle._exceptions import P2PConsistencyError
+from distributed.shuffle._exceptions import P2PConsistencyError, P2POutOfDiskError
 from distributed.shuffle._limiter import ResourceLimiter
 from distributed.shuffle._scheduler_plugin import ShuffleSchedulerPlugin
 from distributed.shuffle._shuffle import (
@@ -2039,6 +2041,35 @@ async def _receive(self, data: list[tuple[int, bytes]]) -> None:
             await asyncio.gather(*[s.close() for s in [sA, sB]])
 
 
+@gen_cluster(client=True)
+async def test_meaningful_out_of_disk_error(c, s, a, b):
+    class OutOfDiskShardsBuffer(DiskShardsBuffer):
+        def _write_frames(self, frames, id):
+            code = errno.ENOSPC
+            raise OSError(code, os.strerror(code))
+
+    df = dask.datasets.timeseries(
+        start="2000-01-01",
+        end="2000-01-10",
+        dtypes={"x": float, "y": float},
+        freq="10 s",
+    )
+    with dask.config.set(
+        {"dataframe.shuffle.method": "p2p", "distributed.p2p.disk": True}
+    ):
+        shuffled = df.shuffle("x", npartitions=10)
+    with pytest.raises(P2POutOfDiskError, match="out of available disk space"):
+        with mock.patch(
+            "distributed.shuffle._core.DiskShardsBuffer",
+            OutOfDiskShardsBuffer,
+        ):
+            await c.compute(shuffled)
+    await assert_worker_cleanup(a)
+    await assert_worker_cleanup(b)
+    await c.close()
+    await assert_scheduler_cleanup(s)
+
+
 class BlockedShuffleReceiveShuffleWorkerPlugin(ShuffleWorkerPlugin):
     def setup(self, worker: Worker) -> None:
         super().setup(worker)