apache/hadoop · error · IllegalArgumentException
requested read length is less than zero
Error message
requested read length is less than zero
What it means
Error "requested read length is less than zero" thrown in apache/hadoop.
Source
Thrown at hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/AbfsInputStream.java:664
}
return contentLength;
}
int readRemote(long position, byte[] b, int offset, int length, TracingContext tracingContext) throws IOException {
if (position < 0) {
throw new IllegalArgumentException("attempting to read from negative offset");
}
if (!(shouldRestrictGpsOnOpenFile() && isFirstRead()) && position >= contentLength) {
return -1; // Hadoop prefers -1 to EOFException
}
if (b == null) {
throw new IllegalArgumentException("null byte array passed in to read() method");
}
if (offset >= b.length) {
throw new IllegalArgumentException("offset greater than length of array");
}
if (length < 0) {
throw new IllegalArgumentException("requested read length is less than zero");
}
if (length > (b.length - offset)) {
throw new IllegalArgumentException("requested read length is more than will fit after requested offset in buffer");
}
final AbfsRestOperation op;
AbfsPerfTracker tracker = client.getAbfsPerfTracker();
try (AbfsPerfInfo perfInfo = new AbfsPerfInfo(tracker, "readRemote", "read")) {
if (streamStatistics != null) {
streamStatistics.remoteReadOperation();
}
LOG.trace("Trigger client.read for path={} position={} offset={} length={}", path, position, offset, length);
tracingContext.setPosition(String.valueOf(position));
op = client.read(path, position, b, offset, length,
tolerateOobAppends ? "*" : eTag, cachedSasToken.get(),
contextEncryptionAdapter, tracingContext);
// Update metadata on first read if restrictGpsOnOpenFile is enabled
if (shouldRestrictGpsOnOpenFile() && isFirstRead()) {View on GitHub (pinned to 2add963021)
Solutions
- Pass a non-negative length to read().
- Validate computed read lengths before the call.
When it happens
Trigger: read() is requested with a negative length argument.
Common situations: See trigger scenarios.
AI-assisted analysis of apache/hadoop@2add963021 (2026-08-22).
Data as JSON: /api/errors/e8c3a99de6662ae4.
Report an issue: GitHub.