Memory test fails while building druid code based

Hey,

I am trying to setup and understand the code base on a windows machine.
Cloned it from https://github.com/implydata/druid

here are the tests which are failing

Failed tests:

org.apache.druid.java.util.metrics.CgroupMemoryMonitorTest.testMonitor(org.apache.druid.java.util.metrics.CgroupMemoryMonitorTest)

Run 1: CgroupMemoryMonitorTest.testMonitor:71 expected:<44> but was:<0>

Run 2: CgroupMemoryMonitorTest.testMonitor:71 expected:<44> but was:<0>

Run 3: CgroupMemoryMonitorTest.testMonitor:71 expected:<44> but was:<0>

Run 4: CgroupMemoryMonitorTest.testMonitor:71 expected:<44> but was:<0>

org.apache.druid.java.util.metrics.cgroups.CpuAcctTest.testSimpleLoad(org.apache.druid.java.util.metrics.cgroups.CpuAcctTest)

Run 1: CpuAcctTest.testSimpleLoad:78 expected:<128> but was:<0>

Run 2: CpuAcctTest.testSimpleLoad:78 expected:<128> but was:<0>

Run 3: CpuAcctTest.testSimpleLoad:78 expected:<128> but was:<0>

Run 4: CpuAcctTest.testSimpleLoad:78 expected:<128> but was:<0>

org.apache.druid.java.util.metrics.cgroups.MemoryTest.testSimpleSnapshot(org.apache.druid.java.util.metrics.cgroups.MemoryTest)

Run 1: MemoryTest.testSimpleSnapshot:113 expected:<{inactive_anon=0, total_pgfault=13137, total_unevictable=0, pgfault=13137, mapped_file=1327104, total_pgpgout=5975, total_active_anon=1757184, total_rss=1818624, rss=1818624, total_inactive_anon=0, active_file=5873664, total_swap=0, dirty=0, total_mapped_file=1327104, total_rss_huge=0, total_inactive_file=2019328, cache=7892992, rss_huge=0, shmem=0, swap=0, total_pgpgin=8346, unevictable=0, active_anon=1757184, total_dirty=0, total_active_file=5873664, hierarchical_memory_limit=9223372036854771712, total_cache=7892992, pgpgin=8346, pgmajfault=120, inactive_file=2019328, hierarchical_memsw_limit=9223372036854771712, writeback=0, total_shmem=0, pgpgout=5975, total_pgmajfault=120, total_writeback=0}> but was:<{}>

Run 2: MemoryTest.testSimpleSnapshot:113 expected:<{inactive_anon=0, total_pgfault=13137, total_unevictable=0, pgfault=13137, mapped_file=1327104, total_pgpgout=5975, total_active_anon=1757184, total_rss=1818624, rss=1818624, total_inactive_anon=0, active_file=5873664, total_swap=0, dirty=0, total_mapped_file=1327104, total_rss_huge=0, total_inactive_file=2019328, cache=7892992, rss_huge=0, shmem=0, swap=0, total_pgpgin=8346, unevictable=0, active_anon=1757184, total_dirty=0, total_active_file=5873664, hierarchical_memory_limit=9223372036854771712, total_cache=7892992, pgpgin=8346, pgmajfault=120, inactive_file=2019328, hierarchical_memsw_limit=9223372036854771712, writeback=0, total_shmem=0, pgpgout=5975, total_pgmajfault=120, total_writeback=0}> but was:<{}>

Run 3: MemoryTest.testSimpleSnapshot:113 expected:<{inactive_anon=0, total_pgfault=13137, total_unevictable=0, pgfault=13137, mapped_file=1327104, total_pgpgout=5975, total_active_anon=1757184, total_rss=1818624, rss=1818624, total_inactive_anon=0, active_file=5873664, total_swap=0, dirty=0, total_mapped_file=1327104, total_rss_huge=0, total_inactive_file=2019328, cache=7892992, rss_huge=0, shmem=0, swap=0, total_pgpgin=8346, unevictable=0, active_anon=1757184, total_dirty=0, total_active_file=5873664, hierarchical_memory_limit=9223372036854771712, total_cache=7892992, pgpgin=8346, pgmajfault=120, inactive_file=2019328, hierarchical_memsw_limit=9223372036854771712, writeback=0, total_shmem=0, pgpgout=5975, total_pgmajfault=120, total_writeback=0}> but was:<{}>

Run 4: MemoryTest.testSimpleSnapshot:113 expected:<{inactive_anon=0, total_pgfault=13137, total_unevictable=0, pgfault=13137, mapped_file=1327104, total_pgpgout=5975, total_active_anon=1757184, total_rss=1818624, rss=1818624, total_inactive_anon=0, active_file=5873664, total_swap=0, dirty=0, total_mapped_file=1327104, total_rss_huge=0, total_inactive_file=2019328, cache=7892992, rss_huge=0, shmem=0, swap=0, total_pgpgin=8346, unevictable=0, active_anon=1757184, total_dirty=0, total_active_file=5873664, hierarchical_memory_limit=9223372036854771712, total_cache=7892992, pgpgin=8346, pgmajfault=120, inactive_file=2019328, hierarchical_memsw_limit=9223372036854771712, writeback=0, total_shmem=0, pgpgout=5975, total_pgmajfault=120, total_writeback=0}> but was:<{}>

Tests in error:

org.apache.druid.java.util.metrics.cgroups.ProcCgroupDiscovererTest.testSimpleProc(org.apache.druid.java.util.metrics.cgroups.ProcCgroupDiscovererTest)

Run 1: ProcCgroupDiscovererTest.testSimpleProc:60 » RE Invalid cgroup directory [C:Us…

Run 2: ProcCgroupDiscovererTest.testSimpleProc:60 » RE Invalid cgroup directory [C:Us…

Run 3: ProcCgroupDiscovererTest.testSimpleProc:60 » RE Invalid cgroup directory [C:Us…

Run 4: ProcCgroupDiscovererTest.testSimpleProc:60 » RE Invalid cgroup directory [C:Us…

is it because i am using windows system ? ow something else ?

Happy Learning !!