Wei-Chiu Chuang created HDDS-11594:
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Summary: OM double buffer exception in debug mode
Key: HDDS-11594
URL: https://issues.apache.org/jira/browse/HDDS-11594
Project: Apache Ozone
Issue Type: Bug
Reporter: Wei-Chiu Chuang
When OM is in debug log level, I found the following log in the stacktrace:
{noformat}
2024-10-17 17:14:16,288 WARN
[om27-OMDoubleBufferFlushThread]-org.apache.hadoop.hdds.utils.db.StringCodecBase:
Decode (hex) 0A 04 76 6F 6C 31 12 07 62 75 63 6B 65 74 31 1A 03 64 73 74 ...
Attempt failed : UTF-8 (see exception below)
Retry succeeded: decoded to
^Dvol1^R^Gbucket1^Z^Cdst ����^A(^A0^C:^@^R^^
^P
^L^H^A^P�������^A^P^@^X^@ ����^A(^@H^@ ^@@��ݿ�2HϦ�۩2P^@j^M^H^A^R^Droot^Z^A�
^@j^M^H^B^R^Droot^Z^A� ^@p���������^Ax�R�^A���������^A�^A^A�^A^Droot
java.nio.charset.MalformedInputException: Input length = 1
at java.nio.charset.CoderResult.throwException(CoderResult.java:281)
at java.nio.charset.CharsetDecoder.decode(CharsetDecoder.java:816)
at
org.apache.hadoop.hdds.utils.db.StringCodecBase.decode(StringCodecBase.java:116)
at
org.apache.hadoop.hdds.utils.db.RocksDatabase.bytes2String(RocksDatabase.java:93)
at
org.apache.hadoop.hdds.utils.db.RocksDatabase$ColumnFamily.batchPut(RocksDatabase.java:309)
at
org.apache.hadoop.hdds.utils.db.RDBBatchOperation$OpCache$FamilyCache.prepareBatchWrite(RDBBatchOperation.java:159)
at
org.apache.hadoop.hdds.utils.db.RDBBatchOperation$OpCache.prepareBatchWrite(RDBBatchOperation.java:288)
at
org.apache.hadoop.hdds.utils.db.RDBBatchOperation.commit(RDBBatchOperation.java:347)
at
org.apache.hadoop.hdds.utils.db.RDBStore.commitBatchOperation(RDBStore.java:285)
at
org.apache.hadoop.ozone.om.ratis.OzoneManagerDoubleBuffer.lambda$4(OzoneManagerDoubleBuffer.java:368)
at
org.apache.hadoop.ozone.om.ratis.OzoneManagerDoubleBuffer.flushBatchWithTrace(OzoneManagerDoubleBuffer.java:268)
at
org.apache.hadoop.ozone.om.ratis.OzoneManagerDoubleBuffer.flushBatch(OzoneManagerDoubleBuffer.java:366)
at
org.apache.hadoop.ozone.om.ratis.OzoneManagerDoubleBuffer.flushCurrentBuffer(OzoneManagerDoubleBuffer.java:329)
at
org.apache.hadoop.ozone.om.ratis.OzoneManagerDoubleBuffer.flushTransactions(OzoneManagerDoubleBuffer.java:296)
at java.lang.Thread.run(Thread.java:748) {noformat}
Seems like a bad bug where OM may not be able to persist transactions.
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