小编Sto*_*ole的帖子

我有一个大约有一百万行的文件.我需要转到第320123行来检查数据.我怎么做？

我有以下字符串:

我肯定会"喜欢上学".

现在,我想将这个字符串拆分为省略号,这是我想获得以下输出:

1. 我会

2. 一定

3. 喜欢

4. 上学

5. .

我正在使用以下命令：

bin/kafka-console-producer.sh --broker-list localhost:9092 --topic test.topic --property parse.key=true --property key.separator=#

这允许我开始输入key#value条目。

但是，无论我尝试什么，我都无法创建空条目。

如果我尝试发送 [myKey#] 并按 Enter，则在提要上我将看到该密钥的空消息，但不为空。

我需要创建一个 Null 值。

我在下面发布了日志的一小部分，如果有人可以解码以下内容，我将非常感激：

• 项目清单
• 托管线程
• 活动线程
• 活动任务
• 待处理任务
• 池线程堆栈跟踪

我有以下 C3PO 配置：

c3p0.minPoolSize=10
c3p0.maxPoolSize=40
c3p0.acquireIncrement=5
c3p0.maxIdleTime=1800
c3p0.maxStatements=50
c3p0.idleConnectionTestPeriod=180

这是日志：

09-02@12:28:43 WARN  ThreadPoolAsynchronousRunner [Timer-0] - com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@700ec336 -- APPARENT DEADLOCK!!! Creating emergency threads for unassigned pending tasks!
09-02@12:28:43 WARN  ThreadPoolAsynchronousRunner [Timer-0] - com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@700ec336 -- APPARENT DEADLOCK!!! Complete Status:
        Managed Threads: 3
        Active Threads: 3
        Active Tasks:
                com.mchange.v2.c3p0.stmt.GooGooStatementCache$1StatementCloseTask@34ac7f2c (com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#1)
                com.mchange.v2.c3p0.stmt.GooGooStatementCache$1StatementCloseTask@28d13cb8 (com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0)
                com.mchange.v2.c3p0.stmt.GooGooStatementCache$1StatementCloseTask@40e968f7 (com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#2)
        Pending Tasks:
                com.mchange.v2.c3p0.stmt.GooGooStatementCache$1StatementCloseTask@1bea516c
                com.mchange.v2.c3p0.stmt.GooGooStatementCache$1StmtAcquireTask@348797c5
                com.mchange.v2.c3p0.stmt.GooGooStatementCache$1StatementCloseTask@31fd2174
                com.mchange.v2.c3p0.stmt.GooGooStatementCache$1StmtAcquireTask@619f604f
                com.mchange.v2.c3p0.stmt.GooGooStatementCache$1StmtAcquireTask@266c149b
                com.mchange.v2.c3p0.stmt.GooGooStatementCache$1StmtAcquireTask@1bcdfd2
                com.mchange.v2.c3p0.stmt.GooGooStatementCache$1StatementCloseTask@170a54e2
                com.mchange.v2.c3p0.stmt.GooGooStatementCache$1StmtAcquireTask@274acd3f
                com.mchange.v2.c3p0.stmt.GooGooStatementCache$1StatementCloseTask@1fe8f740
                com.mchange.v2.c3p0.stmt.GooGooStatementCache$1StmtAcquireTask@77c09b1d
                com.mchange.v2.c3p0.stmt.GooGooStatementCache$1StatementCloseTask@607ca57
                com.mchange.v2.c3p0.stmt.GooGooStatementCache$1StmtAcquireTask@697518d8
                com.mchange.v2.c3p0.stmt.GooGooStatementCache$1StatementCloseTask@6b242ff
                com.mchange.v2.c3p0.stmt.GooGooStatementCache$1StatementCloseTask@214c76c8
                com.mchange.v2.c3p0.stmt.GooGooStatementCache$1StmtAcquireTask@230a558c
                com.mchange.v2.c3p0.stmt.GooGooStatementCache$1StmtAcquireTask@7b766c4c
                com.mchange.v2.c3p0.stmt.GooGooStatementCache$1StatementCloseTask@1bc030e7
                com.mchange.v2.c3p0.stmt.GooGooStatementCache$1StatementCloseTask@66ca9bec
                com.mchange.v2.c3p0.stmt.GooGooStatementCache$1StatementCloseTask@7fc2d7ac
                com.mchange.v2.c3p0.stmt.GooGooStatementCache$1StatementCloseTask@50dd9ebb …