HDDS-14183. Attempted to decrement available space to a negative value #9655
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yandrey321
reviewed
Jan 21, 2026
| if (writeChunkSucceeded && bytesWritten > 0) { | ||
| HddsVolume volume = kvContainer.getContainerData().getVolume(); | ||
| if (volume != null) { | ||
| volume.decrementUsedSpace(bytesWritten); |
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Can logic to be changed to update volume's used space when data is successfully written to the disk. if we want to track space that would be used by concurrent writes we can introduce the concept of space reserved for in-flight writes and update usedSpace only if write is successful.
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What changes were proposed in this pull request?
Saw this warning when datanode disk was nearly full:
Prior to this message, there were many failed writes. Perhaps it needs to increment the value when the write fails.
The fix adds rollback logic in
KeyValueHandler.handleWriteChunk()that tracks when a chunk write succeeds and increments theusedSpacecounter. If any subsequent operation fails, the exception handler callsvolume.decrementUsedSpace()to restore the counter.What is the link to the Apache JIRA
HDDS-14183
How was this patch tested?
CI: https://github.com/sarvekshayr/ozone/actions/runs/21200210393