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修改：优化在默认缓存大小不够用时自动清理或扩充内存，尽量避免频繁分配或移动内存，控制内存最大分配空间或异常自愈。所有这些检查和处理都在写缓存线程中进行。 修复：在“同步管理”中停用Channel时可能会导致相关Node进程崩溃：A fatal error has been detected by the Java Runtime Environment: EXCEPTION_ACCESS_VIOLATION (0xc0000005) #553

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修改：优化在默认缓存大小不够用时自动清理或扩充内存，尽量避免频繁分配或移动内存，控制内存最大分配空间或异常自愈。所有这些检查和处理都在写缓存线程中进行。 修复：在“同步管理”中停用Channel时可能会导致相关Node进程崩溃：A fatal error has been detected by the Java Runtime Environment: EXCEPTION_ACCESS_VIOLATION (0xc0000005) #553

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Wu-Jianqiang and others added 6 commits February 27, 2018 18:10
@Wu-Jianqiang
Revert "修复：MASTER_HEARTBEAT_PERIOD 的计量单位是秒（可以包含3位小数表示毫秒），但不是纳秒。"
5646d7d 
This reverts commit 06e7f44.
@Wu-Jianqiang
修改：优化在默认缓存大小不够用时自动清理或扩充内存，尽量避免频繁分配或移动内存，控制内存最大分配空间或异常自愈。所有这些检查和处理都在写缓…
f45c696 
…存线程中进行。

修复：在“同步管理”中停用Channel时可能会导致相关Node进程崩溃：A fatal error has been detected by the Java Runtime Environment: EXCEPTION_ACCESS_VIOLATION (0xc0000005)
@Wu-Jianqiang
修改：优化对OOM异常的处理，一旦发生说明资源紧张，未来不再超过当前容量。
3faf39d
@Wu-Jianqiang
修复：部分写入时错误长度导致 cache 内部自动申请内存，因此可能发生 OOM 异常。
8d60558
@Wu-Jianqiang
Merge pull request #3 from alibaba/master
93fa391 
merge for merge
@Wu-Jianqiang
Merge branch 'master' of https://github.com/Wu-Jianqiang/canal
60dc852
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Wu-Jianqiang commented Mar 12, 2018 •
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此为继 #536 的继续完善，目前已经稳定运行 4 天。配合 otter 的 PR，目前已支持大附件复制（实测超过 8 MB ）。

注意： 本次修改增加的日志确实存在 #548 中提到的错位现象，刚接触 canal 还不甚了解，待修复。

@Wu-Jianqiang Wu-Jianqiang mentioned this pull request Mar 12, 2018
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agapple added a commit that referenced this pull request Mar 13, 2018
@agapple
fixed issue #553 , merge code
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agapple commented Mar 13, 2018 •
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代码已经提交，-Dcanal.socketChannel=netty 可以切换

@agapple agapple closed this Mar 13, 2018
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收到，感谢！

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