thinker0 commented on issue #2528:
URL: https://github.com/apache/bookkeeper/issues/2528#issuecomment-885367602


   One pulsar-2.8.0 Bookies node was a problem.
   pulsar-2.7.2 downgrade
   
   ```
   18:00:37.715 [SortedLedgerStorage-0] INFO  
org.apache.bookkeeper.bookie.EntryLogManagerForSingleEntryLog - Rolling entry 
logger since it reached size limitation
   18:00:37.715 [SortedLedgerStorage-0] INFO  
org.apache.bookkeeper.bookie.EntryLogManagerBase - Creating a new entry log 
file due to reaching log limit after flushing memtable : logIdBeforeFlush = 
12784, logIdAfterFlush = 12784
   18:00:37.716 [SortedLedgerStorage-0] INFO  
org.apache.bookkeeper.bookie.EntryLogManagerBase - Flushing entry logger 12784 
back to filesystem, pending for syncing entry loggers : 
[BufferedChannel{logId=12784, 
logFile=/data/bookkeeper/ledgers/current/31f0.log, ledgerIdAssigned=-1}].
   18:00:37.716 [SyncThread-7-1] INFO  
org.apache.bookkeeper.bookie.EntryLogManagerBase - Creating a new entry log 
file due to preparing checkpoint : numBytesFlushed = 119500
   18:00:37.716 [pool-5-thread-1] INFO  
org.apache.bookkeeper.bookie.EntryLoggerAllocator - Created new entry log file 
/data/bookkeeper/ledgers/current/31f2.log for logId 12786.
   18:00:37.717 [SyncThread-7-1] INFO  
org.apache.bookkeeper.bookie.EntryLogManagerBase - Flushing entry logger 12785 
back to filesystem, pending for syncing entry loggers : 
[BufferedChannel{logId=12784, 
logFile=/data/bookkeeper/ledgers/current/31f0.log, ledgerIdAssigned=-1}, 
BufferedChannel{logId=12785, logFile=/data/bookkeeper/ledgers/current/31f1.log, 
ledgerIdAssigned=-1}].
   18:00:37.717 [pool-5-thread-1] INFO  
org.apache.bookkeeper.bookie.EntryLoggerAllocator - Created new entry log file 
/data/bookkeeper/ledgers/current/31f3.log for logId 12787.
   18:00:37.757 [SyncThread-7-1] INFO  
org.apache.bookkeeper.bookie.EntryLogManagerForSingleEntryLog - Synced entry 
logger 12784 to disk.
   18:00:37.766 [SyncThread-7-1] INFO  
org.apache.bookkeeper.bookie.EntryLogManagerForSingleEntryLog - Synced entry 
logger 12785 to disk.
   18:01:02.256 [GarbageCollectorThread-8-1] INFO  
org.apache.bookkeeper.bookie.GarbageCollectorThread - Extracting entry log meta 
from entryLogId: 11410
   18:01:02.256 [GarbageCollectorThread-8-1] INFO  
org.apache.bookkeeper.bookie.EntryLogger - Failed to get ledgers map index 
from: 11410.log : Cannot deserialize ledgers map from ledger 433791696895
   18:01:02.271 [GarbageCollectorThread-8-1] ERROR 
org.apache.bookkeeper.common.util.SafeRunnable - Unexpected throwable caught 
   java.lang.IllegalArgumentException: Negative position
        at sun.nio.ch.FileChannelImpl.read(FileChannelImpl.java:785) ~[?:?]
        at 
org.apache.bookkeeper.bookie.BufferedReadChannel.read(BufferedReadChannel.java:93)
 ~[org.apache.bookkeeper-bookkeeper-server-4.14.1.jar:4.14.1]
        at 
org.apache.bookkeeper.bookie.BufferedReadChannel.read(BufferedReadChannel.java:65)
 ~[org.apache.bookkeeper-bookkeeper-server-4.14.1.jar:4.14.1]
        at 
org.apache.bookkeeper.bookie.EntryLogger.readFromLogChannel(EntryLogger.java:418)
 ~[org.apache.bookkeeper-bookkeeper-server-4.14.1.jar:4.14.1]
        at 
org.apache.bookkeeper.bookie.EntryLogger.scanEntryLog(EntryLogger.java:996) 
~[org.apache.bookkeeper-bookkeeper-server-4.14.1.jar:4.14.1]
        at 
org.apache.bookkeeper.bookie.EntryLogger.extractEntryLogMetadataByScanning(EntryLogger.java:1136)
 ~[org.apache.bookkeeper-bookkeeper-server-4.14.1.jar:4.14.1]
        at 
org.apache.bookkeeper.bookie.EntryLogger.getEntryLogMetadata(EntryLogger.java:1045)
 ~[org.apache.bookkeeper-bookkeeper-server-4.14.1.jar:4.14.1]
        at 
org.apache.bookkeeper.bookie.GarbageCollectorThread.extractMetaFromEntryLogs(GarbageCollectorThread.java:607)
 ~[org.apache.bookkeeper-bookkeeper-server-4.14.1.jar:4.14.1]
        at 
org.apache.bookkeeper.bookie.GarbageCollectorThread.runWithFlags(GarbageCollectorThread.java:348)
 ~[org.apache.bookkeeper-bookkeeper-server-4.14.1.jar:4.14.1]
        at 
org.apache.bookkeeper.bookie.GarbageCollectorThread.safeRun(GarbageCollectorThread.java:329)
 ~[org.apache.bookkeeper-bookkeeper-server-4.14.1.jar:4.14.1]
        at 
org.apache.bookkeeper.common.util.SafeRunnable.run(SafeRunnable.java:36) 
[org.apache.bookkeeper-bookkeeper-common-4.14.1.jar:4.14.1]
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) [?:?]
        at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305) 
[?:?]
        at 
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305)
 [?:?]
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) 
[?:?]
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) 
[?:?]
        at 
io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
 [io.netty-netty-common-4.1.63.Final.jar:4.1.63.Final]
        at java.lang.Thread.run(Thread.java:830) [?:?]
   ```


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