[jira] [Created] (ZOOKEEPER-3895) Client side NullPointerException in case of empty Multi operation

["Enrico Olivelli (Jira)" <ji...@apache.org>]

Enrico Olivelli created ZOOKEEPER-3895:
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             Summary: Client side NullPointerException in case of empty Multi operation
                 Key: ZOOKEEPER-3895
                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3895
             Project: ZooKeeper
          Issue Type: Improvement
          Components: java client
    Affects Versions: 3.6.1
            Reporter: Enrico Olivelli


I saw this error in an application that uses Apache BookKeeper DistributedLog library.

The bug is in ZooKeeper Java Client.
{code:java}
Caused by: java.lang.NullPointerExceptionCaused by: java.lang.NullPointerException at org.apache.zookeeper.ZooKeeper.multiInternal(ZooKeeper.java:2105) at org.apache.zookeeper.ZooKeeper.multi(ZooKeeper.java:2050) at org.apache.bookkeeper.zookeeper.ZooKeeperClient.access$1101(ZooKeeperClient.java:70) at org.apache.bookkeeper.zookeeper.ZooKeeperClient$3.zkRun(ZooKeeperClient.java:498) at org.apache.bookkeeper.zookeeper.ZooKeeperClient$ZkRetryRunnable.run(ZooKeeperClient.java:389) at org.apache.bookkeeper.zookeeper.ZooKeeperClient.multi(ZooKeeperClient.java:510) at org.apache.distributedlog.zk.ZKTransaction.execute(ZKTransaction.java:67) at org.apache.distributedlog.BKLogWriteHandler.setLogSegmentTruncationStatus(BKLogWriteHandler.java:1223) at org.apache.distributedlog.BKLogWriteHandler.setLogSegmentsOlderThanDLSNTruncated(BKLogWriteHandler.java:1117) at org.apache.distributedlog.BKLogWriteHandler.lambda$setLogSegmentsOlderThanDLSNTruncated$0(BKLogWriteHandler.java:1083) at java.base/java.util.concurrent.CompletableFuture.uniComposeStage(CompletableFuture.java:1183) at java.base/java.util.concurrent.CompletableFuture.thenCompose(CompletableFuture.java:2299) at org.apache.distributedlog.BKLogWriteHandler.setLogSegmentsOlderThanDLSNTruncated(BKLogWriteHandler.java:1082) at org.apache.distributedlog.BKAsyncLogWriter.truncate(BKAsyncLogWriter.java:449){code}



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