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    <title>Mojang Studios Jira</title>
    <link>https://bugs.mojang.com</link>
    <description>This file is an XML representation of an issue</description>
    <language>en</language>    <build-info>
        <version>9.12.2</version>
        <build-number>9120002</build-number>
        <build-date>10-01-2024</build-date>
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<item>
            <title>[MC-8767] Permanently damaged chunks, ghost chunks</title>
                <link>https://bugs.mojang.com/browse/MC-8767</link>
                <project id="10400" key="MC">Minecraft: Java Edition</project>
                    <description>&lt;p&gt;After a server crash several .mca files got damaged, I&apos;m not sure if the damage is from an incomplete save or file system error, they are simply damaged. &lt;/p&gt;

&lt;p&gt;Note that this .mca file is 100% broken by vanilla server, no 3rd party tools has touched it.&lt;/p&gt;

&lt;p&gt;When the server is running again with the .mca most chunks are ok, a few are not. These bad chunks cause a lot of error message on the console such as this one:&lt;/p&gt;

&lt;p&gt;Chunk file at 10,-139 is in the wrong location; relocating. (Expected 10, -139, got 8, -144)&lt;br/&gt;
Chunk file at 11,-142 is in the wrong location; relocating. (Expected 11, -142, got 3, -139)&lt;br/&gt;
Chunk file at 11,-138 is in the wrong location; relocating. (Expected 11, -138, got 6, -139)&lt;br/&gt;
Chunk file at 14,-136 is in the wrong location; relocating. (Expected 14, -136, got 15, -136)&lt;br/&gt;
Chunk file at 15,-137 is in the wrong location; relocating. (Expected 15, -137, got 7, -156)&lt;br/&gt;
Chunk file at 16,-137 is in the wrong location; relocating. (Expected 16, -137, got 20, -151)&lt;/p&gt;

&lt;p&gt;java.lang.Exception: Stack trace&lt;br/&gt;
        at java.lang.Thread.dumpStack(Thread.java:1342)&lt;br/&gt;
        at abd.a(SourceFile:504)&lt;br/&gt;
        at abq.a(SourceFile:274)&lt;br/&gt;
        at abq.a(SourceFile:72)&lt;br/&gt;
        at abq.a(SourceFile:60)&lt;br/&gt;
        at iw.f(SourceFile:125)&lt;br/&gt;
        at iw.c(SourceFile:76)&lt;br/&gt;
        at iv.&amp;lt;init&amp;gt;(SourceFile:26)&lt;br/&gt;
        at iu.a(SourceFile:172)&lt;br/&gt;
        at iu.a(SourceFile:203)&lt;br/&gt;
        at gs.a(SourceFile:121)&lt;br/&gt;
        at gs.c(SourceFile:164)&lt;br/&gt;
        at gs.a(SourceFile:98)&lt;br/&gt;
        at jd.d(SourceFile:164)&lt;br/&gt;
        at jd.c(SourceFile:56)&lt;br/&gt;
        at id.a(SourceFile:49)&lt;br/&gt;
        at ic.b(SourceFile:29)&lt;br/&gt;
        at net.minecraft.server.MinecraftServer.r(SourceFile:478)&lt;br/&gt;
        at hx.r(SourceFile:248)&lt;br/&gt;
        at net.minecraft.server.MinecraftServer.q(SourceFile:395)&lt;br/&gt;
        at net.minecraft.server.MinecraftServer.run(SourceFile:329&lt;br/&gt;
)&lt;br/&gt;
        at gn.run(SourceFile:565)&lt;/p&gt;

&lt;p&gt;followed by an infinite stream of these:&lt;/p&gt;

&lt;p&gt;Wrong location! pz&lt;span class=&quot;error&quot;&gt;&amp;#91;&amp;#39;Sheep&amp;#39;/18580, l=&amp;#39;world&amp;#39;, x=188.89, y=65.00, z=-2262.58&amp;#93;&lt;/span&gt;&lt;br/&gt;
java.lang.Exception: Stack trace&lt;br/&gt;
	at java.lang.Thread.dumpStack(Thread.java:1342)&lt;br/&gt;
	at abd.a(SourceFile:504)&lt;br/&gt;
	at zh.a(SourceFile:1343)&lt;br/&gt;
	at ix.a(SourceFile:491)&lt;br/&gt;
	at zh.g(SourceFile:1297)&lt;br/&gt;
	at zh.h(SourceFile:1204)&lt;br/&gt;
	at ix.h(SourceFile:385)&lt;br/&gt;
	at net.minecraft.server.MinecraftServer.r(SourceFile:460)&lt;br/&gt;
	at hx.r(SourceFile:248)&lt;br/&gt;
	at net.minecraft.server.MinecraftServer.q(SourceFile:395)&lt;br/&gt;
	at net.minecraft.server.MinecraftServer.run(SourceFile:329)&lt;br/&gt;
	at gn.run(SourceFile:565)&lt;/p&gt;


&lt;p&gt;Expected behavior:&lt;br/&gt;
Once a broken chunk is detected it should be removed and regenerated, possible save a backup in another file.&lt;/p&gt;


&lt;p&gt;Our only solution to this crash was to restore from backup.&lt;/p&gt;</description>
                <environment>java version &amp;quot;1.7.0_09&amp;quot;&lt;br/&gt;
OpenJDK Runtime Environment (IcedTea7 2.3.4) (7u9-2.3.4-0ubuntu1.12.04.1)&lt;br/&gt;
OpenJDK 64-Bit Server VM (build 23.2-b09, mixed mode)&lt;br/&gt;
</environment>
        <key id="21981">MC-8767</key>
            <summary>Permanently damaged chunks, ghost chunks</summary>
                <type id="1" iconUrl="https://bugs.mojang.com/secure/viewavatar?size=xsmall&amp;avatarId=18903&amp;avatarType=issuetype">Bug</type>
                                    <status id="5" iconUrl="https://bugs.mojang.com/images/icons/statuses/resolved.png" description="A resolution has been taken, and it is awaiting verification by reporter. From here issues are either reopened, or are closed.">Resolved</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="3">Duplicate</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="nuxas">Nuxas</reporter>
                        <labels>
                            <label>chunk</label>
                            <label>chunkerror</label>
                            <label>region</label>
                    </labels>
                <created>Thu, 31 Jan 2013 13:50:30 +0100</created>
                <updated>Thu, 1 Aug 2013 00:58:46 +0200</updated>
                            <resolved>Thu, 31 Jan 2013 15:20:52 +0100</resolved>
                                    <version>Snapshot 13w04a</version>
                                                                        <votes>0</votes>
                                    <watches>0</watches>
                                                                            <comments>
                            <comment id="51286" author="nuxas" created="Sat, 9 Mar 2013 12:32:45 +0100"  >&lt;p&gt;This is probably not a duplicate of &lt;a href=&quot;https://bugs.mojang.com/browse/MC-3766&quot; title=&quot;Game crashes when opening a second instance of a world during the loading process of the same world&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-3766&quot;&gt;&lt;del&gt;MC-3766&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;That ticket report a client crash, in this issue the server and clients are still running but reporting the error log as written before.&lt;/p&gt;

&lt;p&gt;The exceptions are different and at a glance I can&apos;t see any resemblance of the stack traces either.&lt;/p&gt;</comment>
                            <comment id="41655" author="bljat" created="Thu, 31 Jan 2013 15:20:52 +0100"  >&lt;p&gt;Duplicate of &lt;a href=&quot;https://bugs.mojang.com/browse/MC-3766&quot; title=&quot;Game crashes when opening a second instance of a world during the loading process of the same world&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-3766&quot;&gt;&lt;del&gt;MC-3766&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10102">
                    <name>Duplicate</name>
                                            <outwardlinks description="duplicates">
                                        <issuelink>
            <issuekey id="14228">MC-2545</issuekey>
        </issuelink>
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