apache/flink · error · IOException

Failed to cast s5cmd spell [{}] [exit code = %d] [cfg: {}] m

Error message

Failed to cast s5cmd spell [{}] [exit code = %d] [cfg: {}] maybe due to:
{}

What it means

Error "Failed to cast s5cmd spell [{}] [exit code = %d] [cfg: {}] maybe due to: {}" thrown in apache/flink.

Source

Thrown at flink-filesystems/flink-s3-fs-base/src/main/java/org/apache/flink/fs/s3/common/FlinkS3FileSystem.java:398

                    hogwart.redirectErrorStream(true)
                            .redirectInput(inScrolls)
                            .redirectOutput(outScrolls)
                            .start();

            try (Closeable ignore =
                    closeableRegistry.registerCloseableTemporarily(
                            () -> {
                                maybeCloseableRegistryException.set(
                                        new IOException(
                                                "Copy process destroyed by CloseableRegistry."));
                                destroyProcess(wizard);
                            })) {
                exitCode = wizard.waitFor();
            } catch (InterruptedException e) {
                destroyProcess(wizard);
                // restore interruption after destroyProcess, to let destroyProcess do some sleeps
                Thread.currentThread().interrupt();
                throw new IOException(createSpellErrorMessage(exitCode, outScrolls, artefacts), e);
            } catch (IOException e) {
                destroyProcess(wizard);
                throw new IOException(createSpellErrorMessage(exitCode, outScrolls, artefacts), e);
            }
            if (exitCode != 0) {
                throw new IOException(
                        createSpellErrorMessage(exitCode, outScrolls, artefacts),
                        maybeCloseableRegistryException.get());
            }
        } finally {
            IOUtils.deleteFileQuietly(tmpWorkingPath);
        }
    }

    private static void destroyProcess(Process processToDestroy) {
        LOG.info("Destroying s5cmd copy process.");
        processToDestroy.destroy();

View on GitHub (pinned to 2f3c205e92)

Solutions

1. Address the cause reported by the error message: Failed to cast s5cmd spell [the reported value] [exit code = the reported value] [cfg: the reported value] maybe due to: the reported value
2. Verify the inputs, configuration values, and classpath/dependency setup related to this operation, then retry.

Example fix

Correct the condition described ("Failed to cast s5cmd spell [the reported value] [exit code = the reported value] [cfg: the reported value] maybe due to:
the reported value") and rerun the job or command.

When it happens

Trigger: Triggered at runtime when the operation fails because: Failed to cast s5cmd spell [the reported value] [exit code = the reported value] [cfg: the reported value] maybe due to: the reported value.

Common situations: Commonly caused by misconfiguration, missing dependencies or files, unsupported types or operations, or invalid user input leading to: Failed to cast s5cmd spell [the reported value] [exit code = the reported value] [cfg: the reported value] maybe due to: the reported value.

AI-assisted analysis of apache/flink@2f3c205e92 (2026-08-14). Data as JSON: /api/errors/c3687394d30f8ed7. Report an issue: GitHub.